Weather Preparedness & Self Reliance

flyaway#BRRegional burns expose us to all types of weather. Burning Man faces the unique challenge of camping in the desert -- Mosaic Experiment challenges us to be prepared for October camping in Ohio. What can you expect? Anything. That means sunny days and chilly nights, light rain, heavy rain, wind, hail, cold. One day you might be happy running free in a tank top. That night, you might be wrapped up in a sleeping bag with three layers of pajamas cuddling for warmth. One thing most burners have in common: we're proud of our ability to survive unpredictable weather, outdoors, without trips to the local store for last minute items -- and we do so with style while having a great time. Showing up prepared (and the process of getting prepared) teaches us how to take care of ourselves responsibly, so that we can make the most of our time burning together.

How can you up your Radical Self-Reliance quotient? Plan ahead for everything. Anticipate dramatic changes. A good question to ask yourself: what kinds of things do you pack beyond the obvious "umbrellas, sweatshirts and raincoats"? How are you planning to prepare for wind? Do you have good stakes for your tent and shade structures? Do you have an extra tarp? How will you survive a cold night if temps drop into the 30s?


Rain at MosaicIn 2014, we thought it would be helpful to start a thread on our Mosaic Facebook Group asking our community to share the ways in which they prepare their art, theme camps, tents, and selves for the inevitable October rain in Ohio.

Here are some of the best recommendations our community members responded with:

  • Good solid rain boots
  • Have a SPARE pair of rain boots
  • How to waterproof your boots with wax:
  • LOTS of warm socks!
  • Pack your clothing in a Rubbermaid container.
  • Pack an extra outfit inside a Ziplock bag in case your tent floods. Pack bedding in trash bags if it's raining on arrival day, so it doesn't get wet between car and tent.
  • Waterproof your tent and clothing (the spray can stuff from Shoe Carnival is said to be good enough.)
  • PREVENT TENT LEAKS: When you leave your tent, make sure nothing is touching the sides. Anything touching the tent sides creates a place for rain to gather and enter the tent rather than roll off. Pull all crap toward the center!
  • Put a ground sheet or tarp under your tent and ensure it doesn't extend past the sides of the tent. If the tarp is sticking out around the sides, it will gather rainwater and pool under your tent.
  • Better yet, put the ground tarp inside the tent under your bedding.
  • Have lots of tarps and rope!
  • Don't build art projects out of cardboard for events when it might rain. 
  • Warm cocoa, hot cider, miso soup. YUMMY during cool rainy camping adventures.
  • For cold rain and damp nights, use a light weight sheet or blanket to cover air vent under rain fly and then tarp away!
  • Vitamin C! Airbornes!
  • Extra tie downs and stakes for your tarps!!!
  • Wool, fleece, warming clothing
  • Rain suit! Something like this
  • Check out this article with tips from engineers: Storm Proofing Your Tent


Rain isn't the only likelihood. You should also prepare your structures for wind. When high winds pick up, EZ Up shade tents that aren't staked down can go flying and become dangerous. Are you bringing a dome or other large shade structure? Make sure you've researched and planned how it will stand up to wind. Some tips:

  • Make sure you secure your tent to the ground in a way that it will not come loose. Buy higher quality stakes than the simple metal ones that come with your tent.
  • Wind over time will cause your tent to move up and down and side to side, therefore your ground stakes need to be checked frequently to see if they are working.
  • pegProperly angle your stakes and guylines. If wind is up-rooting the pegs, use longer ones, and remember to hammer them in so that the point is closer to the tent than the head.
  • Keep in mind that anything lying around your camp that is not secured down, like garbage, plastic bottles, paper, art or anything else, will get blown during high wind. It is your responsibility to take back everything that you bring in, from the largest structure to the smallest bottle cap or cigarette butt. Keeping everything secured means you won’t have to spend time searching for it later.


moon-tree-wind-d-fr-mtpmcg911-sm-1413It's possible that we might experience cold weather at Mosaic. If it's cold and damp, body chill is even more likely. How to not just survive, but thrive?

  • Cold Weather Clothing: Make sure you pack the basics: long sleeve shirts, long pants, a hooded sweatshirt, parka jacket, warm socks, gloves or mittens, a beanie. Layer your clothing so you can add/subtract insulation as needed.
  • Avoid cotton materials as they trap and hold moisture close to the body, reducing any insulating value. Undergarments of polypropylene are ideal for wicking away dampness, while over garments should be made of wool. If you layer, it's easier to adjust your comfort level as temperatures change.
  • Air mattresses trap cold air underneath you. Layer a fleece or wool blanket on top of your air mattress to insulate your own body heat.
  • If you are hanging near a camp­fire, make sure that your outer layer of cloth­ing is less likely to end up ruined if struck by an errant ember.  Wool is one of the best, most fire-resistant nat­ural mate­ri­als and is great for this.
  • Hydrate, then hydrate some more: You may not feel thirsty in cold weather, but staying hydrated is just as important in cold weather as it is in summer. Drink water (warm or cold), hot tea, or hot chocolate—the latter also provides high-calorie fuel for your burn adventure.
  • Be ready for condensation: As you breathe in a warm tent on a cold night, condensation will form on your tent, even if it's a four-season model. There's not a lot you can do about condensation, but the next morning be sure to dry out your sleeping bag before using it again. To minimize condensation, you can vent your tent at night—it won't hold in heat as well, but it will stay dryer.
  • The old wisdom of stripping down before you get into a sleeping bag doesn't make sense. Put on everything you brought before you turn in for the night. And if the campfire is still going, heat some water, pour it into a heat-proof water bottle, and snuggle into your bag with it.
  • Hot Hands and Mylar Blankets are a quick lifesaver on a cold night. Open a pair of Hot Hands, shake them, and throw them in the bottom of your sleeping bag. Cover your bag with a mylar blanket. You'll sleep like a baby all night long.

rainbowtentThe key to enjoying Mosaic Experiment is to #BurnResponsibly. This means taking action before you arrive to be prepared. The time is now to get ready!

Have a comment on this list or another suggestion we should add? Let us know at info[at]mosaicexperiment[dot]com.

Mosaic Experiment 2015: SOLD OUT

  MOSAIC MOONAs of Wednesday, August 19th, Mosaic Experiment 2015 has sold out! This is great news for those of us behind the scenes who planned wishlist budgets based on selling 400 Adult tickets. This year we increased Art Grants and Effigy budgets, upped our firewood stock for all, implemented a Low Income Ticket program, gifted Child tickets (12 and under), and now organizers are busy bees getting infrastructure ready to create our community village. How will you defy gravity? Time to prepare!

Did you miss getting your ticket? Check out the Mosaic Ticket Exchange & Rideshare Facebook Group. To transfer your ticket, we recommend calling Brown Paper Tickets at 1-800-838-3006. They are super helpful and quick!

DefyingGravityballonsTICKET TRANSFERS INFO: Tickets may be resold through the Brown Paper Tickets network. If you need to sell or transfer a ticket, you must do so through the ticket vendor. Once your ticket has been transferred, Mosaic Experiment will receive notice of the transaction. Beware when buying a ticket from an individual. Only the first occurrence of a ticket code will be honored at the gate. We take no responsibility for tickets sold outside of Brown Paper Tickets.

FIND A TICKET? Awesome! NOW read the Survival Guide. You MUST READ to attend... there will be a quiz!

10 PRINCIPALSSELLING YOUR TICKET? Do your part and make sure the lucky person who buys it understands what they are getting into. It's everyone's job to spread our principles! Download the Survival Guide in PDF, or send them this link along with their ticket info.

WHAT'S NEXT? Start preparing! Get your tents and gear ready for Autumn camping in Ohio. Figure out how you'll radically express yourself - with costumes? Performance Art? Service to the community by volunteering? Start pondering the Ten Principles and how you can deepen your participation this year. What's that crazy creative idea for an impromptu art installation you had? Do it! Want to organize a happy hour, a wandering karaoke tribe, an interactive gravity defying game? GO FOR IT. The experiment only takes off when we all launch it together!

See you on the strip-mine playa!


Mosaic Experiment 

What is a Sparkle Pony?

Sparkle PonyEver heard the term? It's a fairly popular meme in burner culture. Urban Dictionary defines it as "A high maintenance person at the Burning Man Festival who is unprepared for the harsh camping environment and becomes a burden to their campmates." That might be fine for a Black Rock City definition, but can that also apply to Mosaic Experiment? If so, how do we acculturate such a person into being better prepared and more participatory? How does a person become a "Sparkle Pony" to begin with? We asked our Facebook Community what a Mosaic Sparkle Pony would be, asked for suggestions to minimize their presence, or best practices to teach those who are already on site. Here are some of our favorite responses:

"To me it means anyone who believes in "the burn will provide" and/or is not radically self-reliant. I will always help when I can no matter if the person is sparkling like Edward Cullen in the sun or not. Everyone needs help some days... and next year, it might be you that left all your water at home."

"Sparkle Ponies are people that take all the radical self-reliance they're not doing and put it into radical self-expression. Because looking good is more important than not getting dehydrated."

"I've never heard of it in the context of burns. In previous experiences it meant someone high on their horse out of place. In the context of this, I take it to mean someone unprepared for camping/living for 4 days. I would render them aid as best I can without causing myself/my camp to also need aid."

"I had not heard the term, but as to unprepared people I'd help them to the best of my abilities without harming my own camp/family..."

"Sparkle ponies also leave ungodly amounts of inconceivably wrong and destructive moop, and have no concept of the amount of work that goes into cleaning up, let alone the build, prep, and maintenance of these crazy things we call home."

"Sparkle pony has become the hipster of Burning. Often times used beyond the intended context to express derision towards an 'other'."

"There's always more to go around than what any one person could need, so it seems to even out in my experiences. Sparkle Ponies seem to come away from it better off and better learned. I find it's more often out of ignorance or just poor planning skills (planning is tough, I'm serious), so I don't hate."

"Although the word dates back to at least 2008, it was popularized by the Sparkle Pony Corral, a theme camp present in Black Rock City from 2009-2010. Frustrated participants could drop off their camp’s sparkle ponies at the corral where they would be fed, watered, and have their egos stroked by “certifiable experts.” Sparkle ponies received much-needed attention while campmates received a much-needed break. See also: Tourist."

"You can call them tourists or accuse them of not beholden the spirit of burner culture, however sparkle pony seems to just be a burner name for a way to approach life that is cross-cultural...see user or leech. Sometimes it is ignorance and sometimes it is a sincerely planned thing. Regardless of how you love or don't love sparkle ponies, they are here in this radically inclusive society because no matter how hard you try utopia, it is still made of humans with all their glory and faults. Sparkle pony corral idea cracks me up, by the way."

"If I see someone struggling, I'll help them to the best of my ability without harming myself or others."

"There is a difference in the 'oh crap I forgot something' and the I 'I just didn't pack anything'. For the first type I help if we can spare, for the second, I will share the things we brought specifically for sharing but wont risk running out of things for me and my mates."

"If people want to dip into my supplies, I'm more than happy having them help me with our numerous construction projects...."

"I appreciate definitions that differentiate between ignorance and willful entitlement."

"I did as much research as I could before my first burn this Spring, but there were still things that I missed and probably could not anticipate before actually going to one. Self-reliance is wonderful, but everyone has to start somewhere and I don't think punishing ignorance is a good solution. The people who were most helpful to me in learning self-reliance, who I will try to emulate in the future, were the ones who demonstrated it positively in their own actions, and kindly reached out and shared that knowledge with others." 

"Maybe Sparkle Ponies could be people lacking in self-reliance, who never have any intention of growing out of it. Sparkle Foals can be people who haven't quite learned it yet, but will some day grow into Sparkle Steeds, awesome examples for everyone."

"I personally believe there is a difference between a Sparkle Pony and someone who needs help because they were mildly unprepared."

"Being mildly unprepared is one thing. That's happened to everyone at some point. Hell, my bedding was left behind when we went to Burning Man. Luckily, I was able to procure extra blankets and pillows. That's not being a Sparkle Pony. Mishaps and failed planning happen."

"A Sparkle Pony is someone who take Radical Self-Reliance and tosses it out the window. Who expects to be able to use the community as a crutch, and there be nothing wrong with that (when there most definitely is). 
As for how to deal with them, I'm honestly torn. The snarky burner in me says 'fuck 'em', but letting them starve isn't particularly nice either." 

"My experience is that Sparkle Ponies think that the burn is a big party. Everybody gives them something for nothing. They have no ideas about the principles or just don't care about them. I have seen them show up at burns and give things out expecting something in return. I have seen them show up with no food because 'I heard people were cooking for everybody'. I have helped explain moop-y activities to some of them, especially the confetti with glitter throwing, cig butt throwing, etc. I try to help them learn and if they really need something and I have enough I share."

"I agree that Sparkle Ponies can be described as those who disregard the principles, namely radical self-reliance. I think it's important to be aware of what that phrase represents and to remember to not use it loosely or in a manner that makes someone feel attacked. I know there's obvious playful attacks but I'm cautioning against using it like a derogatory insult. Sometimes a newb doesn't even realize they're offending or falling short of a standard. I like the help them within reason fix, as long as it's accompanied with an explanation (principle lesson) that isn't beating them up. I would hold off on frustration or letting the blood pressure rise until they show themselves to be a serial sparkler. Then give them shit. I'd also like to caution using that phrase for someone if you are certain it fits. One of my friends who came to an event felt very alienated because she overheard people calling her a Sparkle Pony (not sure if they knew she could hear) and it felt like exactly the opposite of what I love about and brag about at a burn or from burners. It felt like judgement and like she wasn't welcomed. Not everyone fully gets the culture yet and not everyone nails it on the first couple tries. Please stay considerate before pointing fingers. We're all growing in our storylines. Thanks again everybody!!! You mo fo's are tits awesome."

"If I know that someone is new I usually try to help and explain more. I have seen the same group of people show up more than once with nothing, wearing feathers and glitter, throwing butts everywhere and begging for food or something warm or something cold or somewhere to sleep. Those are definite Sparkleys!"

"As someone who's been around burners forever, but is not a burner yet, I'm in love with it. All of it."

"No where else in the world can I go and KNOW that I won't be responsible for everyone else. Everyone knows I'm always prepared and you can come to me if you've forgotten something, just about anything. It's become a problem, I'm suddenly feeding/watering/clothing more then myself and my kids are grown."

"For me, when i hang out with my burner friends, it's like getting to be with a group of respectful, fun, grown ups, who have all taken the time to plan (in advance even!) for the event." 

"I don't know about the rest of you, but I've raised my kids, and they were taught to plan ahead. Taking on the responsibility of another person, maybe even a stranger, is no fun. And can be extremely frustrating and a total inconvenience." 

"My point is this, respect for yourself and others is taught. Most kids and/or adults don't show respect because they've never seen it. It's shameful." 

"If you respect your peers, or in this case, fellow burner community, you wouldn't be a sparkle pony. You'd respect yourself enough to take care of you, and then respect the rest of us enough to not be a burden. As an adult you are responsible for yourself, we may understand that, but I've dealt with many that haven't learned that lesson." 

"Radical entitlement."

"Sleeping in a cold wet sleeping bag and other "environmental" problems were hardships. I have dealt with such before and I know it's just a matter of enduring them. They have little effect on my world. "Sparkle Ponyism" is what broke me. I tried to contribute to the burn... because I believe that is much of what a burn is about. Not because of fear of some label. After I arrived it seemed like there was a continual mantra chanting around me: "Don't be a Sparkle Pony.' It was clear to me that it wasn't enough not to be a Sparkle Pony. I could not APPEAR to be a Sparkle Pony to anyone. I specifically came because the tenant of radical inclusion. I quickly found I wouldn't be excluded due to my mental illness, but every time I tried to be on the receiving end of gifting... I faced people who might view my need for food, etc. as 'wanting more than I was giving'. I believe there are a lot of first time burners who've never known a burner. Whether you admit it or not, you have built a society with built-in pressures to conform. Most people don't see that because they know from other burners the difference between 'right & rude'. I had no one to teach me by example. I tried every method I could think of to convey 'Yes, you have wonderful food... but I don't want to just talk about it and look at it... I need to eat some.' It was probably just bad luck that my first attempts were viewed as 'Waiter? serve me some food.' It took a lot of passive observation just to learn that I needed to bring my own vessel and utensils. This problem of knowing how to be a burner went far beyond your traditions surrounding communal eating. I could have lived with eating my cookies and chips for 4 days. It was that I felt excluded from most burner activities (and therefore burner society as a whole) because I couldn't figure out how to not step on people's toes. I don't care if I piss off someone, but I came for acceptance from burners in general. What I found was that if I could wait for people to come to me and step into my environment; then there was no problem. When I tried to step out into your society... I couldn't tell the difference between not being liked and not being accepted. Instead of drumming in what behaviors are not okay. How about a simple course in how to fit in and what IS acceptable? My burn ended with me overjoyed. It wasn't just the outpouring of love. It's because I believe I now know the basics in how to be part of the 'all inclusive' burner society. I've learned enough of your subtle language that I can just relax and enjoy the next burn."

"To me, a sparkle pony is one who willfully disregards self-reliance, assuming others will take of the boring things. It's not someone who tries hard even while making mistakes. If once you know better, you do better: not a sparkle pony. Just a new burner getting your bearings."

"I experienced massive culture shock at my first burn as I quickly realized that I had an enormous amount of behavior to study and emulate if I wanted to be accepted. Each principle has it's own meaning for every individual but they still project a basic picture of the whole. I'm sorry you were made to feel like you stepped on toes or weren't welcome... thankfully that's something I didn't experience. No one person ever made me to feel unwelcome, but I quickly learned which behaviors or actions didn't really fly with those around. As an example, I didn't know about radical self-expression for my first burn. I just thought it was a simple camping trip so I brought the most grungy and raggedy clothes. No one ever said or did ANYTHING negative to me about it, but I quickly felt out of place. Now I'm all bright and shiny, lol."

"It's a problem with culture in general. It's a living breathing entity. Visiting a burn is like going to a country where everyone speaks the same-ish language but all the customs and practices are completely different. There can be a harsh learning curve at times, but most burners are more than willing to help educate you in a positive way... or at least a tongue in cheek-snarky one! This place really is removed from the default world."

"Stewardship! Stepping up and picking up trash because it's there (LNT), helping a child find his camp (Civic Responsibility), welcoming people home for 2 hours (Volunteering), making naked bacon pancakes for people (Immediacy, Decommodification), telling a fart joke or being a shoulder to cry on (Gifting), n etc... When you become responsible, when you think beyond yourself, you cant help but incorporate the 10 Principles. If you forget, or you are new: pick up after yourself and others, don't put it in the porto if it did not come outta your body, engage people, try new things, don't be a dick!  Oh, don't be a shirt cocker. Dudes walk around with just a shirt n their junk hanging out. That's just dumb. Unless, you are in Camp Shirt Cocker and then it would be kinda cool..."

"My first burn I was 'involved' with the effigy team but didn't do much to actually help. Why this happened is a long story for another day. I came and absorbed anything and everything people offered. I enjoyed meals in camps and they expected nothing in return. Nobody ever asked me not to do this, nor gave me a hard time because I was hungry or thirsty, or needed something. They were just stoked that it was my first time and I was trying. Maybe a little bit of 'fuck yer burn' flavor, but nothing that wasn't taken jokingly."

"By Friday night I was hooked and I got it. Walking high fives, giving of myself, reaching out to people." 

"All of us, whether we put time into the build, have been here a week earlier setting up, or even helped maintain camp and cook meals - we are all a part of this, big or small. We all play a role."

"I feel like this thread may of scared some people into asking for help when they genuinely need it. Every noob is a Sparkle Pony in their own way (including myself). We all need to remember our first time and how much you may of had planned or prepared already for you. The community helped tame my wild oats and turned me into a being that just sparkles now."

"I'm glad that others reached out to help you when they did and that overall everything was a positive. Even in this environment it can be scary to ask questions or even interact. We only bite if you consent first though. <3"

"I find burn culture so interesting because there is no one definitive authority, and yet it still functions well. There is no one right answer to any of our questions about the principles, no static definition - only a collective idea and individual experiences and thoughts that define each one. The Hive Mind in action. The more we try to get it right, the clearer the buzzing becomes, I think."

"I have learned something new from each burn I have went to. We thought we were pretty prepared but some things got left unpacked and then we figured out our structure, while seeming pretty stable, didn't hold up against high winds and hail lol. But we walked away from this weekend not upset about our tent raft, but inspired to try a yurt next year and proud to have learned even more about tarping and packing."

We love our Mosaic Community and all the insightful comments into this very engaging thread!

From an organizer's perspective, we like to remind everyone to read and share the Survival Guide, and if you know someone you suspect will be a so-called "Sparkle Pony" please send them the link and ensure they also read it. Quiz them! :-)

Your Bad Planning Is Not My Emergency

Need help packing? We got you covered!

Packing For MosaicWe've found the most helpful aid in packing for burn events is having a good checklist to go by before organizing your items into waterproof bins and placing them in your vehicle, but if you've never attended a burn before, it can be stressful trying to figure out what exactly belongs on that list! Thankfully, one of our Mosaic participants, Jessica Strong, generously gifted her own checklist of items to pack for the Reclaimation regional burn in Kentucky, whose climate and weather isn't too unlike Southern Ohio's. If you already have a Burning Man packing list, keep in mind at Mosaic you'd be more concerned about rain than dust, with more focus on umbrellas and raincoats than dust masks and ski goggles, and you'd be more likely to deal with October cold than August heat, but you never know, our very first Mosaic event in 2013 was riddled with temperatures in the 80's, so we'd advise you prepare for both extremes!


  • Tent
  • Tent stakes
  • Hammer
  • Tarps (under tent)
  • Tarps (over tent/ rain cover)
  • Ropes/ guy lines
  • Air mattress
  • Air pump
  • Batteries for pump
  • Sheets
  • Blankets / sleeping bag------ I prefer sheets and blankets. Feels like home!
  • Pillows
  • Fan
  • Batteries for fan
  • Tent light
  • Door mat
  • Hand broom and dust pan
  • Dirty laundry bag
  • Duct Tape


  • Sunshade
  • Stakes for shade
  • Tables
  • Chairs
  • Solar Christmas/ deck lights
  • Flash lights / Lanterns
  • Pop up laundry bin for Trash can


  • Headlamp
  • Camelback/ water backpack
  • Cup
  • Bowl
  • All in one eating tool
  • Hand sanitizer
  • Sunscreen


  • Baby wipes *
  • Soap
  • Shampoo / conditioner
  • Toothbrushes *
  • Toothpaste *
  • Towels / washcloths
  • Bug spray *
  • Extra TP *
  • Sunscreen *
  • Hairbrush *
  • Hand sanitizer *
  • Ear plugs *
  • Razor
  • Shaving cream
  • Shower shoes
  • Makeup *
  • Hair ties *
  • This is my packing list for Reclamation where we have hot showers, so this may be trimmed down. I have starred the items I will bring to a burn/ campsite without showering capabilities!


  • Camp Stove
  • Propane
  • Pot (to cook in)  :D
  • Skillet
  • Silverware
  • Knives
  • Dish soap
  • Dish scrubby
  • Wash bins
  • Hand sanitizer
  • Baby wipes
  • Plates
  • Bowls
  • Cups
  • Coffee set ( I have a large metal cup and plastic coffee cups to boil water and make instant coffee
  • Paper towels
  • Tin foil
  • Corkscrew
  • Can opener
  • Trash bags
  • BBQ lighter
  • Pot holders
  • Measuring cups
  • Cooking utensils (slotted spoon, spatula, tongs, serving spoon)
  • Cutting board

*A note on organization. I bought a small 3 drawer organizer that stays in my kitchen bin that holds all of our silverware, cooking utensils, dish soap/scrubbies. Everything I need to run my kitchen is in one bin except the stove. It’s too big!


*Items that stay packed year round/do not spoil*

  • Cooking oil
  • Instant coffee
  • Creamer (dry)
  • Sugar
  • Salt & Pepper
  • Energy bars
  • Frequently used spices

*I keep a food bin with all of this stuff. When It comes burn time, I just refill with the perishable items. I personally like to eat well at a burn!


  • Fire Fans
  • Fuel
  • Safety blanket
  • Refueling canister
  • Small funnel
  • Trash bag to keep fans dry
  • Burn cream


  • Games
  • Book
  • RX Meds
  • ID
  • Health insurance card
  • Printed directions to location
  • Phone
  • Phone charger
  • First aid kit
  • Cigarettes

Leave No Trace!

LNT/Earth Guardian lead here. I'm calling all burners attending Mosaic, seasoned veterans to rosy-red virgins, and all the ones in between. If you are interested in keeping Reclaim just as we found it, please email at or you can im me here on the facebooks. You can sign up to be an Earth Guardian, keeping Reclaim MOOP free during the event or LNT, cleaning up Reclaim and the burn scar Monday October 6th, or both. Remember, volunteering is sexy, plus you can get some awesome swag for your help.Leave No Trace