TL;DR
2025 was challenging. Early event-week rain and wind created tough MOOP conditions across Black Rock City. True to form, the Black Rock City community rebuilt, had a Burn, and cleaned up — followed by the 150-person Playa Restoration crew (Resto). Together, we once again passed the Bureau of Land Management’s Post-Event Inspection, staying under the one-square-foot-per-acre standard limit (under 0.002% MOOP). One clear word of warning from Resto: more than 2,000 lag bolts were still left anchored into the playa. Lag bolts remain the most serious recurring MOOP issue, and the primary focus for improvement as we come together for Axis Mundi 2026.
Burning Man’s Leaving No Trace Principle
One of the 10 guiding Principles of Burning Man, Leaving No Trace, states:
“The Burning Man community respects the environment. We are committed to leaving no physical trace of our activities wherever we gather. We clean up after ourselves and endeavor, whenever possible, to leave such places in a better state than when we found them.”
Community Problem Solving: The #1 Worst MOOP — Lag Bolts / Tent Stakes / Rebar (But Really Lag Bolts)
While we initially hoped lag bolts were just a temporary rising MOOP trend back in 2022, three consecutive years at #1 Worst MOOP tells a different story. Lag bolts are a problem that the Black Rock City participants must solve. The good news: it ain’t rocket science.
Defining the Lag Bolt Problem
Lag bolts are highly effective for anchoring objects into the playa. But when screwed flush into — or below — the surface, they disappear into the dust. Overlooked, they become both a leave no trace failure and a safety hazard for vehicles and people.
Resto’s MOOP data shows something important about the problem. This isn’t about a few camps missing many lag bolts — the problem is that many camps are missing a few. Across Black Rock City’s 157 million square feet, those small, easy-to-miss lag bolts — often no larger than half an inch at the surface — added up to 2,304 lag bolts in 2025.
If you have developed reliable techniques for managing and recovering lag bolts, we welcome those solutions in the comments. Shared practices help the community get stronger at Leaving No Trace.
So what are the not-rocket-science solutions?
Lag Bolt Finding Solutions
- Visibly tag your lag bolts when you screw them in so they’re easy to locate and unscrew during breakdown. Use solutions such as marking whiskers, heavy-duty flagging tape, cords, ties, etc., that won’t become MOOP issues themselves.
- Use a metal detector to help ensure no lag bolts or anchors remain hidden beneath the surface.
Leaving No Trace works when the community takes responsibility for the city we build together. Theme camps, art projects, and event infrastructure teams manage spaces ranging from a few hundred to a few thousand square feet, and are responsible for restoring those spaces before they leave. The 150-person Playa Restoration crew, made up of community members like you, stays behind for weeks to inspect and scour roughly 157 million square feet of playa. Resto is not the primary cleanup crew for camps and projects. Our role is to verify, remediate what’s missed, and ensure we meet federal standards.
The scale difference is enormous, but the principle remains the same: the care taken within each camp, project, or infrastructure footprint directly determines the work required to restore the playa, and whether we pass inspection.
MOOP Map 2025: What the Colors Actually Mean
The MOOP Map records cleanup effort and time spent by Playa Restoration crews across Black Rock City.
Clear areas indicate normal forward progress — occasional MOOP, but nothing worth writing home about. Yellow areas reflect moderate MOOP conditions, requiring slower, cautious, stop-and-go movement to avoid missing anything. Red areas represent difficult-progress cleanup conditions that stopped us in our tracks, impeding our momentum as we work to cover the entirety of Black Rock City’s roughly 3,700 acres before the BLM Post-Event Inspection.
Orange dots mark locations where Resto placed traffic cones to identify concentrated problem areas requiring additional remediation. New to the MOOP Map this year are Light Grey and Dark Red dots, which reflect Resto’s pre-testing using the standard BLM inspection method. Light Grey indicates areas that passed under the one-square-foot-per-acre limit. Dark Red indicates areas that exceeded the limit and would have failed inspection.
The MOOP Map serves as feedback for the BRC community, highlighting where leave no trace practices supported efficient restoration, and where conditions demanded additional field effort.
(Click on the MOOP Map below to view and zoom in on a high-resolution version.)
Some Specifics About the 2025 MOOP Map
Storm–hit areas left behind a patchier MOOP pattern than usual and some shocking surprises — such as the long stretch of red that was an embedded paper towel explosion that landed along K-street between 6:30 and 7:15!
In the City Grid (2:00-10:00, Esplanade to K streets), the back blocks along I, J, and K streets improved a lot since recent years, while it seems the mid-blocks in 2025 of D, E, F, G, and H were MOOPier than usual.
Overall, theme camps, art projects, and event infrastructure are generally cleaning up well, with fewer large problem areas but many more smaller issues. Now, if we all consistently located and removed all of our lag bolts, stakes, and rebar, that would eliminate roughly half of the red points from the MOOP Map, and we’d be in considerably better shape.
See the Playa Restoration 2026 Playbook for practical instructions from the Playa Restoration team, including proven tools, methods, and tips to help camps and art projects successfully pass their MOOP test and leave no trace.
BLM Post-Event Inspection: Pass — Thank You, Citizens of Black Rock City and Thank You, Resto
The Bureau of Land Management’s allowable MOOP threshold on the Black Rock Desert is one square foot per acre on average (under 0.002%). Under the 2019 Environmental Impact Statement, no more than ten percent of the 120 test points may exceed this limit — a remarkably strict standard that Burning Man continues to meet on federal public land.
In early October, the BLM conducted its annual inspection.
Results indicate a slight increase from 2024: seven of 120 test points exceeded the allowable threshold, all within the city grid (Esplanade through K Street, 2:00 through 10:00). Overall conditions remain stable compared to 2023, when eleven test points exceeded the limit — a result that approached the 10% maximum.
An additional seven Points of Interest are monitored separately, including Man Pavilion, the Temple, and other key locations. Of these, only one exceeded the threshold.
Onward to Axis Mundi 2026
With more than 70,000 participants, Leaving No Trace only succeeds when we, the community, hold ourselves accountable for our shared use of national public lands. Burning Man’s continued Post-Event Inspection success reflects that collective effort, with Playa Restoration providing the final sweep to ensure the Black Rock Desert is left clean and without a trace.
This victory belongs to the entire community — and it is a commitment we carry forward together through the Axis Mundi of Burning Man 2026 and beyond.
