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5 encounters
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
June 2013 Stanley, Custer County, Idaho Class B #56257

River rafter has rocks thrown toward him while hiking near Sheepeater Hot Springs

The witness was hiking alone along a river trail toward a hot springs to rejoin the group. Two rocks landed close in front of him in succession, but he did not see what threw them. He first suspected companions ahead on the hillside, but they denied throwing anything when he arrived. He reported a strange, eerie feeling during the incident.

Rock throwing
August 2004 Mackay, Custer County, Idaho Class B #10960

Possible stalking outside a campers' tent in the White Knob mountains

On the last night of a camping trip, the witness lay awake in a tent around midnight and heard close footsteps and deep breathing from a large presence outside. The witness sat up, armed, and turned on a flashlight, after which all sounds stopped and a sudden intense dread lifted. No animal was seen, no odor was noticed, and nothing further happened that night.

FootstepsUnidentified sound
August 2003 Custer, Custer County, South Dakota Class B #19350

Camp counselor describes unusual incidents near Custer

The witness and a companion had returned to shore after late-night canoeing and were talking by the lake. The witness noticed a tall, fuzzy, person-like figure standing uphill by a pine tree and watched it about 30 seconds before alerting the companion. The companion turned after their friend passed under a light, and the figure stepped behind the tree and vanished without being seen by the companion.

Partial sightingSilhouette
September 2001 Stanley, Custer County, Idaho Class B #13717

Possible vocalizations heard by staff at Redfish Lake near Stanley

Around midnight in September, the witness was walking between facilities when loud growl-to-scream vocalizations began from a creek bed about 300 yards away. The calls repeated 10-15 times over 15-20 minutes while the source seemed to move nearer, farther, and side to side. The witness brought a neighbor outside so both heard the sounds, then returned to the cabin and kept weapons close. A next-day search of the creek bed found no tracks or other sign.

GrowlScream