Mammoth Site
A site in Hot Springs, South Dakota, Mammoth Site is filed here for what the record attaches to it. The sinkhole full of mammoths—where the dig still runs. It sits in the archive under paleontology and local folklore. The dossier holds 1 reported claim and 1 documented fact, with the verified spine filed separately from the lore. The site is open to visitors.
· in your passport — stamped · open it
Is Mammoth Site 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
The Mammoth Site is the sinkhole that swallowed a herd — the 1974 bulldozer cut that exposed 61 mammoths in a collapsed cave, the fossil bed that stopped the housing development and became a working paleontology site. George Hanson's blade hit a seven-foot tusk; his son called the professor.
The site was the trap — the spring-fed pool that drowned the mammoths who came to drink, the karst sinkhole that preserved them for 26,000 years, the excavation that's still going. It's the largest concentration of mammoth remains in the world.
The site is still there — the museum built over the dig, the bones in place under the building, the excavation that's not finished. The file keeps the Mammoth Site: the 1974 discovery, the sinkhole, and the dig that's still finding mammoths.
The Mammoth Site is the archive's fossil file — the sinkhole herd, the working excavation, and the site that's the world's mammoth graveyard.
Why this file matters
The Mammoth Site is the archive's fossil file — the 1974 sinkhole discovery, the working dig, and the mammoths that are still coming out.
A sinkhole that trapped mammoths keeps its bones — the file's suggestion being that the site's hold is the trap: the spring-fed pool, the bulldozer that found it, and the dig that's still open.

The Mammoth Site is a museum and paleontological site near Hot Springs, South Dakota, in the Black Hills. It is an active paleontological excavation site at which research and excavations are continuing. The facility encloses a prehistoric sinkhole that formed and was slowly filled with sediments during the Pleistocene era. The sedimentary fill of the sinkhole contains the remains of Pleistocene fauna and flora preserved by entrapment and burial within a sinkhole. As of 2016, the remains of 61 mammoths, including 58 Columbian mammoths and 3 woolly mammoths had been recovered. Mammoth bones were found at the site in 1974, and a museum and building enclosing the site were established. The muse
The Mammoth SiteThe record of claims
Reported a presence at the site. The site in Hot Springs, South Dakota gives the account a documented setting: real place, real history, unresolved reports. The file holds testimony rather than proof; the claim remains anecdotal. 'Mammoth Site' carries the account. The figure remains the site's most-repeated sighting.
Documented history
The site’s discovery is documented. A documented history gives the file real substance; this entry is part of that spine. The fact is historically verified — the part of the file that doesn't need hedging. 'Mammoth Site' documents the entry. The date is part of the site's documented spine. The reports keep the address on the map.
Verified historyWikipedia
Sources on file
- 01Mammoth SiteWikipedia · encyclopedia · A4
Field notes & open questions
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