Grand Prismatic Spring and its runoff terraces from the overlook, Midway Geyser Basin, Yellowstone National Park
Grand Prismatic Spring · Midway Geyser Basin · every step off the boardwalk here is the offense · Photograph: Aaron Herzberg
Off-trail and thermal areas · 36 CFR § 7.13(j) · Yellowstone National Park

Cited for walking off the boardwalk in Yellowstone National Park.

Yellowstone has a regulation written for it alone: in every thermal area, foot travel stays on the boardwalks and the marked trails. A ranger who sees you off them, or is sent a video, writes a federal violation notice that cannot be paid by mail. Most of the people it charges wanted a better photograph.

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Do not add to it and do not delete it. The clip is evidence either way, and destroying evidence is a separate federal problem.

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One regulation, written for Yellowstone.

Written for Yellowstone.

This one names Yellowstone: "Foot travel in all thermal areas and within the Yellowstone Canyon between the Upper Falls and Inspiration Point must be confined to boardwalks or trails that are maintained for such travel and are marked by official signs" (36 CFR § 7.13(j)).

No distance threshold.

A single step past the boardwalk is the offense; how far you went is a sentencing fact. The compendium defines a thermal area as any place with hot springs, geysers, mud springs, fumaroles, or warm ground at the surface.

Not seeing the sign.

The thermal rule is written as a rule about where feet may go, and unlike the wildlife-distance closure, which prohibits knowingly approaching, it contains no word like knowing or willful. Not seeing the sign rarely defeats the count.

Why a few steps are prosecuted.

The Park Service's safety page says burns from thermal features are a common cause of serious injury and death in the park, and the U.S. Geological Survey's Yellowstone observatory counts twenty-two scalding deaths since 1872 and hundreds of injuries. The U.S. Attorney's Office has said in writing that it will seek significant penalties, including jail, for willful violations. The facts that separate you from them, no fence, no damage, no warning ignored, a few feet and a few seconds, are the whole conversation with the prosecutor.

Announced thermal cases, 2016–2026The range
  • 01Custody: two to seven days in every announced case that carried it
  • 02Fines: $350 to $3,000 in the recent cases; one 2016 Grand Prismatic judgment passed $8,000 with restitution and payments
  • 03Probation: none in several cases; two to five years, unsupervised, in the others
  • 04Bans: none, or two to five years from Yellowstone; once, from all federal Interior, Agriculture and Army Corps land
  • 05Payments: $106.92 in restitution for a damaged mat; $500 to $1,000 to the park's geological fund
  • 06The one the court cut down: the government asked for two years' probation and the $5,000 maximum against a well-known actor who posted his own photographs; the court imposed $500, a $1,000 payment, and no probation

From U.S. Attorney's Office and National Park Service announcements. These are the cases the government chose to publicize, and each carried an aggravating fact. A first-time case with no damage, no fence, and no argument with the ranger commonly ends with a fine and no ban. That is the usual shape, not a promise, and never the shape of a case nobody handled.

Tell me where you were, how far you went, and whether anyone filmed it. The call takes thirty minutes.
Your own photographs of the spot and the signs, taken the same day, are worth more to your case than any statement you could give a ranger.
A National Park Service ranger writing a violation notice on a boardwalk while a visitor reads his copy beside a Stay on Boardwalk sign
The sign is a pictogram for a reason · the report will say it was there
A ranger writing a notice on a car hood near a thermal area
Off the boardwalk is the citation the park prosecutes hardest

The places, the video, the ban.

The closures, where notices are written, the sign, the video, groups and guides, probation, bans, restitution

The closures, and why it cannot be paid by mail

On top of the regulation sit the superintendent's closures, which carry the same force once posted (36 CFR § 1.5(f)). The current Yellowstone compendium extends the canyon rule from Chittenden Bridge to the Upper Falls and from Inspiration Point to Silver Cord Cascade, confines foot travel to the trail through signed revegetation areas, and closes every thermal area to smoking and to food carried outside a pack. Fenced ground at Norris is closed ground; the magistrate judge has said from the bench that three-foot fencing around a boardwalk is a clear sign the area is closed. A closure count is often charged alongside the foot-travel count.

The District of Wyoming's collateral schedule lists foot travel in thermal areas and the canyon as a mandatory appearance. A closure violation by itself is $100 on the same schedule, and damaging a mineral formation is listed at $250 or an appearance. A notice for the thermal count therefore arrives with Box A checked, and the page on reading the notice explains what follows. The case will be called at Mammoth whether or not you do anything, and someone has to answer for you when it is.

Mammoth, Old Faithful, Norris, Midway

The Mammoth terraces sit a short walk from the court that hears the case, and the travertine there keeps a footprint, which is why some Mammoth cases carry a second count for destroying a mineral resource (36 CFR § 2.1(a)(1)(iv)). In 2026 a Texas visitor who left footprints across Canary Spring and three other features drew five days in custody; in 2024 a Colorado man who entered the protected area at Canary Spring with a second adult and two children received seven days, five years of probation with a ban, and a $3,000 fine. At Old Faithful a visitor who walked roughly ten feet out onto the cone, filmed by a stranger, received seven days in 2025. At Norris a twenty-one-year-old who crossed the fence and climbed toward Steamboat Geyser's vent received a week, $1,500, and a two-year ban. At Midway two visitors who walked onto the bacterial mat at Opal Pool were each given two days, $350, $106.92 in restitution, and a two-year ban.

Two places produce notices without a boardwalk in sight. The Grand Prismatic Overlook trail, off the Fairy Falls trail, crosses a hillside above thermal ground: stepping off it toward the spring is charged under the same paragraph as the boardwalks, and where the slope is signed as a revegetation area, a $100 count for leaving the trail (36 CFR § 2.1(b)) comes with it. The canyon rim, from Uncle Tom's to Artist Point and along the North Rim, is named in the same paragraph as the geyser basins. A photograph from a rock beyond the railing is charged exactly like a step off the boardwalk at Norris.

Why the sign still matters

The boardwalks are marked by official signs, as the rule requires, and the edge of the boardwalk is itself the line. The pictogram signs at the basins, the fences at Norris, and the printed warnings the park puts in front of visitors are how the government answers the person who says nobody told him, and the ranger's report will list what was posted at the spot. The charge and the sentence are different questions. A visitor who stepped onto the crust for a picture, was called back, and came back is at one end of the range. A visitor who read the sign, climbed the fence, and argued when the ranger arrived is at the other, and the announced jail sentences live there. What you said in the first minute is in the report. What you did in the thirty seconds before is on someone's phone. Both are evidence of state of mind, and when the act is not in dispute, state of mind is what the disposition turns on.

The video

A large share of these cases begin with a clip a stranger uploaded, and the ranger's report quotes it: the caption, the comments, the time stamp, the distance the poster guessed. If you are the person in the clip, three things follow. Do not respond to it, because a reply is a statement. Do not post your own, because an explanation with a location tag is a confession. And do not delete what you already published: destroying a record in contemplation of a federal matter is its own offense, with a penalty measured in years (18 U.S.C. § 1519). Send me the link and leave the rest alone.

When more than one person stepped off

In the 2024 case at Canary Spring, the two adults who entered the protected area with two children were the two defendants; the children were not charged. Each adult cited has a case in their own name at Mammoth, the government treats the cases as related, and nobody in a group should resolve anything until all of them have talked to a lawyer. Guides are the other version: in 2021 a self-styled guide who promoted off-trail thermal trips in a guidebook and a podcast was tried on fifteen counts, found guilty on seven after a two-day bench trial, and given a week in custody, five years of probation, and an order to rewrite the book's introduction. Nor is the person who is hurt excused. A visitor burned off-trail in 2023 was charged for the walk, with a ban from both parks as a condition of release while the case was pending.

The ban as a condition of probation

A park ban is not a separate sentence; it is a condition of probation. Federal law lets the court place a misdemeanor defendant on probation for up to five years (18 U.S.C. § 3561(c)(2)) and attach conditions reasonably related to the offense, including that the defendant refrain from frequenting specified kinds of places (18 U.S.C. § 3563(b)(6)). In thermal cases the specified place is Yellowstone, the term has run from two years to five, and in the 2016 Grand Prismatic case it covered every acre managed by three federal departments. Entering the park while the condition is in force is a probation violation. A ban is avoidable in many cases and negotiable in most, and it is the term I spend the most time on for anyone who intends to come back.

Restitution and payments

The court can order restitution as a condition of probation (18 U.S.C. § 3563(b)(2)), and it has: $106.92 for the mat at Opal Pool, a figure precise to the cent. More often the judgment includes a community-service payment to the Yellowstone Forever geological fund, $500 to $1,000 in the announced cases, which is neither a fine nor restitution but arrives in the same order. What a conviction does afterward, and how the case is handled without you flying back, have their own pages: whether this is a criminal record, and whether you have to return to Wyoming. The Yellowstone page covers the court itself.

Asked about boardwalk and closed-area cases.

Is walking off the boardwalk in Yellowstone really a crime?
Yes. It violates a regulation written for this park alone, and a conviction is a Class B federal misdemeanor with a maximum of six months and a $5,000 fine. Nobody gets the maximum for a step off a boardwalk; the classification is what matters, because a conviction is a federal court record. The page on records explains what that difference means for a background check, a clearance, or a visa.
The ranger said I have to appear in court. Can I just pay the ticket instead?
No. The District of Wyoming's collateral schedule lists foot travel in a thermal area or the canyon as a mandatory appearance, so no amount on the notice closes the case. It will be called at the Yellowstone Justice Center on a date the Central Violations Bureau mails you. Appearing does not have to mean you, in person, in Wyoming: for a misdemeanor the court can accept your written consent to proceed through counsel or by video, and the page on coming back explains when that is granted.
I stepped off for a few seconds and stepped right back. Does that matter?
It matters a great deal, just not to whether the notice was valid. The regulation has no distance or time threshold, so a few seconds on the crust is the offense. But every sentence the government has announced carried something more: a fence crossed, footprints across four terraces, a car driven into the basin, children brought along. A short step, ended the moment you were told, with no damage and no video of you posing, is the case that usually ends with a fine and nothing else.
Someone filmed me and posted it. Can the government use that?
Yes, and it usually does. Several announced sentences began with a stranger's video, and the ranger's report will describe the clip, the caption, and the comments, including any in which you were identified. Do not answer the post, do not add one of your own, and do not delete anything you already published. A post is a statement; a deletion after you know an investigation is possible can be charged as obstruction, a felony. Save the link and give it to me.
Will I be banned from Yellowstone?
Not automatically. A ban is a condition of probation. In the cases the government announced, bans ran from two years to five, and each came with an aggravating fact: a fence, damage to the formation, a vehicle in the basin, a video made for an audience. In a first-time case with no damage and no defiance, probation is often avoided altogether, and where it is not, the length of the ban and whether it reaches Grand Teton are negotiated terms.
My child stepped off the boardwalk. Am I the one in trouble?
Possibly. In the announced 2024 case at Canary Spring, the two adults who entered the protected area with two children were the two defendants; the children were not charged. A ranger who watches a child leave the boardwalk while the parent watches too has a choice about whom to cite and for what, and what the parent did next shapes it. The paragraph cited and the probable-cause statement decide whether the case is about your conduct or your supervision.
A boardwalk along a steaming thermal pool in Yellowstone
The boardwalk is the line. One step past it is 36 CFR 7.13(j), and a court date

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