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12 encounters
23 August 2018 Jefferson, Park County, Colorado Class B #60877

Mother and daughter have a scary daytime encounter while hiking on North Twin Cone

Two hikers were descending a road when they heard multiple loud tree knocks, had rocks thrown past them, smelled an intense stench, and one of them saw a dark figure watching. They fled downhill toward their vehicle while using an air horn, heard a loud guttural whoop near the car, and reported being followed for several miles.

Wood knockRock throwingOdorSilhouetteWhoop +1
10 October 2014 Hartsel, Park County, Colorado Class B #46795

Hunter experiences night-time rock-throwing and possible vocalizations while camping near Hartsel

The witness was alone in a tent at camp while elk hunting and trying to sleep. He heard an unusually deep throat-clearing sound, then about 20 minutes later heard two rocks land near the tent with loud thuds. Shortly after, he heard drawn-out whoop-like calls coming from multiple directions around camp. He remained in the tent overnight and left after sunrise without checking for sign.

VocalizationRock throwingWhoop
June 2014 Jefferson, Park County, Colorado Class B #64064

Camper hears Sierra-type whoops and knocking near Lost Creek Wilderness, 35mi SW of Denver

The witness was camped with two children on a ridgeline near Tarryall Reservoir. On two consecutive nights the witness heard loud deep whooping calls, first from the valley below and then much closer to camp, with wood-on-wood-like banging the first night and coyotes falling silent. On the second night the witness left the tent with a rifle and light and heard something large and heavy crashing through timber with loud footsteps, then stood guard until morning and left early without telling the children.

WhoopWood knockFootstepsMovement only
July 2011 Lake George, Park County, Colorado Class B #63607

Ranch employees hear loud screams near Lake George, 30mi NW of Colorado Springs

The witness was leading an overnight camping trip and sitting around a campfire with customers around 11 pm. Just after finishing a story about a previous loud scream heard at the same location, the group heard a loud howl or scream nearby. The customers suspected a prank, but the witness became convinced the sound was a Bigfoot and later asked not to be sent on further trips.

ScreamHowl
31 August 2002 Leadville, Park County, Colorado Class B #4897

Family finds and hears compelling evidence near Leadville

A family hiking around a high-elevation lake above treeline near Leadville found footprint-like depressions in moss between glacial rocks and found additional depressions on further search. They also noted moss torn from boulders, chewed, and left in neat piles, and heard grouped rapping sounds on each of three visits over three days. They recorded the tracks and moss on video and made a cast of one track. No animal was seen.

TracksWood knock
12 May 2001 Lake George, Park County, Colorado Class B #2493

Family startled by overpowering cries near their rural home

Late at night the witness and her two children were eating at home when a very loud, prolonged cry was heard from near the front yard. The sound lasted several seconds and frightened the family, who froze and then moved upstairs to wait. No animal was seen and a later check reportedly found no tracks.

Vocalization
September 2000 Eleven Mile Resevoir, Park County, Colorado Class B #1237

While standing on the deck of vacation home man hears eerie human-like calls

The witness was standing on a deck overlooking a reservoir in the morning when an extended human-like animal call was heard from a nearby forested area. The sound lasted several minutes and was described as spine-tingling, lost-sounding, and unlike anything heard during extensive hiking and camping experience. No animal was seen.

Vocalization
21 August 2000 Fairplay, Park County, Colorado Class B #529

Couple hears strange cry, finds big footprints in Pike National Forest near Fairplay

The couple reported hearing a very loud animal-like vocalization for about 20 minutes at night from their cabin. A few days later they found two large footprints in a wash near a marshy area a couple hundred feet from the cabin. They photographed the prints and estimated the first water-filled track at 16 to 18 inches long.

VocalizationTracks
20 July 2000 Cody, Park County, Wyoming Class B #2216

Driver sees bipedal creature in headlights near Yellowstone hot spot

The witness was driving with a companion from Yellowstone's east gate toward Cody after dark when a dark, large bipedal figure crossed the road in front of the van in about two strides. Both occupants joked about having seen a sasquatch and attributed it to tiredness, continuing without turning back. The witness recalled the moment later after reading about a cast and hotspot reports.

Road crossingPartial sighting
Fall 2000 Fairplay, Park County, Colorado Class B #3112

UK Gypsies vacate Colorado campsite after encounter with 7' creature

A large group was gathered for a nighttime barbecue and fire at a forest clearing when a very loud high-pitched scream was heard from just outside the clearing. Moments later a very tall powerfully built ape-like creature covered in long beige hair with dark areas on the face and elbows was seen entering the clearing and then leaving at great speed. The group fled in panic leaving belongings behind, and a follow-up visit about a week later found no belongings or tracks.

ScreamFull-body sighting
4 August 1998 Park County, Colorado Class B #1369

faint groaning and growling vocalizations heard.

The witness and a companion heard loud distant howls from their tent while camping overnight on two consecutive nights. Dogs on nearby properties barked and stayed agitated after the sounds. On the second night they also heard faint groaning/growling and later heard shots from the surrounding area.

HowlGrowl
October 1980 Gardiner, Park County, Wyoming Class B #26521

Memory told of heavy, bipedal running heard while camping in Yellowstone National Park

In the winter of 1980 the witness and a relative camped overnight in a tent in Yellowstone after hiking and fishing. Around 10 at night while inside the tent they heard and felt something large and heavy run past on two legs for about ten seconds. They remained inside terrified until daybreak and found no tracks in the morning.

Footsteps