Man attempts illegal soak in Yellowstone acidic hot pool, is reduced to wallet and flip-flops

Via a Freedom of Information Act request, Yellowstone National Park recently reported the tragic details of an accident last summer, where a 23 year old man dissolved after an illegal attempt to bathe in Mammoth Hot Springs in Yellowstone National Park. He had gone 200 yards past the legal tourism area with his sister, who was recording on her cell phone when the incident happened. Luckily, that video has not been released.

Though search and rescue was attempted, Deputy Chief Ranger Lorant Veress remarked, "in a very short order, there was a significant amount of dissolving" due to the churning, acidic water. The man was reaching down to test the temperature, with the intent to "hot pot," aka bathe in the steaming water, when he slipped and fell in.

Reports Wyoming's KURL news:

Search and rescue rangers who arrived later did find the victim's body in the pool, along with his wallet, and flip flops.  But, a lightning storm stopped the recovery efforts.  The next day, workers could not find any remains.  Veress says the water was churning, and acidic.

He remarked, "In a very short order, there  was a significant amount of dissolving"

Veress said the park posts warning signs for important reasons,  "… because it is wild and it hasn't been overly altered by people to make things a whole lot safer,  it's got dangers.  And a place like Yellowstone which is set aside because of the incredible geothermal resources that are here, all the more so."

Yellowstone is meant to be wild and preserved as such, so the park posts warning signs for this very reason. Despite the signs and the accident, a week later, a Chinese tourist also left the visitors boardwalk and illegally tried to collect water from the same spring to use for its "medicinal purposes." Collecting any of the park's resources, including water from hot springs, is a federal violation and the man was heavily fined. Walking on the fragile crust of the thermal springs causes irreversible environmental damage.

How the hot springs were formed, from the Yellowstone website:

At Yellowstone each year, the rain and melted snow seeps into the earth. Cold to begin with, the water is quickly warmed by heat radiating from a partially molten magma chamber deep underground, the remnant of a cataclysmic volcanic explosion that occurred 600,000 years ago.

After moving throughout this underwater "plumbing" system, the now hot water rises up through a system of small fissures. Here it also interacts with hot gases charged with carbon dioxide rising up from the magma chamber. As some of the carbon dioxide is dissolved in the hot water, a weak, carbonic acid solution is formed. In the Mammoth area, the hot, acidic solution dissolves large quantities of limestone on its way up through the rock layers to the hot springs on the surface.

It is not known why the FOIA report was requested.

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