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9 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
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
21 June 2008 Antonito, Conejos County, Colorado Class B #24068

Possible vocalization frightens fisherman from campsite along Conejos River

The witness was camping alone with his dog in a tent in a remote mountain meadow area while on a fly-fishing trip. Late at night he woke and heard a single extremely loud, high-pitched scream-like howl lasting several seconds from a few hundred yards away across a canyon. Frightened by the sound, which he perceived as territorial, he abandoned his tent and gear and drove to a nearby town to sleep. He returned at daybreak, found no tracks, and later concluded the sound matched alleged sasquatch vocalizations after comparing it to known animal recordings.

ScreamHowl
4 November 2006 23 Mi North Of Meeker, 26 Mi S. Of Craig, Moffat County, Colorado Class B #16648

Hunter reports possible vocalizations in the Danforth Hills near Meeker

While hunting in the morning with a spouse, the witness heard an extremely loud vocal sound coming from a roadless area and echoing off hills. The sound began as a low roar and rose to a high-pitched primal scream, lasting about six to seven seconds and repeating four times over about ninety seconds. The witness reported lifelong outdoor experience in Colorado and said the sound matched no known animal and caused a chill. No animal was seen.

Scream
19 August 2000 Eagle, Eagle County, Colorado Class B #1251

Threatening bellows directed at hikers and their dogs in the Holy Cross Wilderness

The witness and a companion were hiking a high-elevation trail with two dogs when they heard a very loud, rhythmic wailing and moaning sound from a pine cluster about 50-75 yards away. The sound lasted several minutes and seemed to move toward them, growing louder, which frightened the witness and held the dogs' fixed attention without prompting a chase. They left without seeing the source, and minutes later a ranger they met said she had also heard the unfamiliar sound.

ScreamHowl
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
8 August 1996 Ouray, Ouray County, Colorado Class B #140

Characteristic vocalization heard by hunter on Hayden Mountain

The witness and a companion were archery hunting in high-elevation basins in western Colorado when they heard a single, extremely loud scream lasting several seconds from the direction of their camp. They initially attributed the sound to a mountain lion, but acquaintances who hunt mountain lions did not recognize the described sound. Years later, after hearing a purported Bigfoot vocalization on television, the witness reconsidered the 1996 incident as possibly Bigfoot-related.

ScreamPossible misidentification
October 1987 Grand Junction, Mesa County, Colorado Class B #20028

Hunter recalls unusual and persistent vocalizations at Carson Lake on the Grand Mesa

Two companions were setting up camp for the night after hunting when they heard prolonged loud screaming from across a lake. One fired a shot in the air, after which the sound briefly stopped then resumed closer and louder with brush thrashing heard. Feeling unnerved, they packed up and drove out the same evening. The writer later felt televised alleged Bigfoot vocalizations sounded similar.

Scream
August 1964 Between Crested Butte And Gothic, Gunnison County, Colorado Class B #2553

Bowhunter and wife abandon deer when threatened by large, unseen animal

The witness and spouse were bow hunting in timber when something unseen followed them, starting and stopping as they moved. After the witness shot a deer, the follower vocalized loudly and thrashed brush and trees while pursuing them downhill. The pair abandoned the deer and left the timber, with the follower continuing to vocalize behind them to the timber edge.

VocalizationHowlScreamFootstepsTree break +1