Thermopolis
Thermopolis is a town in Thermopolis, Wyoming. The world’s largest mineral hot spring—the terraces. It sits in the archive under natural wonders, dark history and local folklore. The dossier holds 1 reported claim and 1 documented fact — documented record and retelling kept side by side. It is a living community — be a respectful visitor.
· in your passport — stamped · open it
Is Thermopolis haunted?
The record holds 1 claim — filed as reported, not verified. The heaviest filing is classed anecdotal. The archive documents the claim; it takes no position on the ghost.
The record — long form
Thermopolis is the town the hot water bought — home to what promoters call the world's largest mineral hot spring, a flow of 130-degree water that rises through the Thermopolis Anticline where Owl Creek meets the Bighorn. The Shoshone knew the springs first and held them sacred; fur trapper Daniel Potts wrote home about them in 1826. When the Wind River Reservation was drawn in 1868, the springs went inside it — which didn't stop the squatters in tents and dugouts soaking at the edges, or the 'Hotel de Sagebrush' renting pole-and-brush rooms to the pilgrims.
The springs' transfer is the town's founding wound. In the 1890s, white settlers pressed Chief Washakie to sell; an 1891 deal for $5,000 failed in Congress, and the final 1896-97 agreement moved the springs — and 55,000 acres around them — to federal and then state hands for a fraction of their worth. The treaty carried one clause the town still honors: the water must be free to the public. Hot Springs State Park keeps it — the free bathhouses run on the spring's 3,000 gallons a minute.
The file keeps Thermopolis: the sacred springs, the reservation sale, and the town named 'hot city' that still gives its water away — the treaty clause that outlived everything else in the deal.
Thermopolis is the archive's springs file — the world's largest mineral spring, the Washakie cession, and the water that's free by treaty.
Why this file matters
Thermopolis is the archive's springs file — the sacred springs, the 1897 sale off the reservation, and the free-water clause still running.
A spring sold for $60,000 keeps its promise — the file's suggestion being that Thermopolis's hold is the treaty: the water was bought, but the bathing stayed free, and the park is still honoring it.
Thermopolis is the county seat and most populous town in Hot Springs County, Wyoming, United States. As of the 2020 census, Thermopolis had a population of 2,725. Thermopolis, Greek for "hot city", is the location of numerous natural hot springs, in which mineral-laden waters are heated by geothermal processes. The town claims the world's largest mineral hot spring, "The Big Spring", as part of Hot Springs State Park. The springs are open to the public for free as part of an 1896 treaty signed with the Shoshone and Arapaho Indian tribes.
Thermopolis, WyomingThe record of claims
Reported a presence at the springs. A Wyoming town's lore is municipal property; Thermopolis keeps this account in its unofficial archive. The file holds testimony rather than proof; the claim remains anecdotal. The figure remains the site's most-repeated sighting. The lore keeps its witness. The lore keeps its witness.
Documented history
The springs’ geology is documented. Thermopolis' documented history is the record the rest of the file stands on. The fact is historically verified — the part of the file that doesn't need hedging. 'Thermopolis' documents the entry. It is the kind of fact the rest of the dossier leans on. The telling survives; the proof stays folklore.
Verified historyWikipedia
Sources on file
- 01ThermopolisWikipedia · encyclopedia · A4
Field notes & open questions
UW batch; VERIFY task auto-queued.