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Observation type

Sounds2

Specifically

Vocalization2 Unidentified sound1

When

–

State

South Dakota2

Source classification

Class B1 What do classes mean?

Account type

First-hand2

Entries

Main reports only9,644 Related accounts only6,940 On the map8,877

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2 encounters
Vocalization Custer County Clear all
12 March 2025 Hot Springs, Custer County, South Dakota Class B #79740

Mouth pops heard by Mountain Lion hunter near Custer State Park

The witness was concealed while hunting mountain lion and using a distressed-fawn predator call. From behind, the witness heard repeated knock-like or mouth-pop sounds from two directions, followed by deep mumbling described as an unfamiliar language. The witness saw nothing, moved into the open, then quickly hiked out and has not returned to the area.

Unidentified soundVocalization
about 3 years earlier Custer, Custer County, South Dakota Related account #19350

Vocalization near Custer, South Dakota

The witness had heard the same moaning crying sound during a prior season at the same camp about three years earlier.

Vocalization
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The Database of Unexplained Encounters. Claims are recorded as claims: the Anomadex catalogues what people reported, where it was reported, and how sure I am that it was read correctly. It does not rule on what they saw.

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Report data: BFRO - Bigfoot Field Researchers Organization, Sasquatch Chronicles (podcast, local transcripts). Summaries are written for the Anomadex; original reports stay with their publishers. Map data © OpenStreetMap contributors ·

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