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9 encounters
12 June 2021 Lake CIty, Hinsdale County, Colorado Class B #69394

Family hears loud wood knocks at Deer Lakes outside Lake City

On June 12, 2021, the witness family stopped at Upper Mill Pond to fish and watched a moose and calves from their truck. They heard an estimated 8-10 wood knocks from the west tree line from at least three different positions while vehicles came and went. The witness considered people in the woods as possible but later interpreted the sounds as Bigfoot-related after hearing another knock that night at a stargazing stop.

Wood knock
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
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
12 October 2008 Bayfield, La Plata County, Colorado Class B #25511

Couple finds large human-shaped footprints while elk hunting near Bear Creek

While elk hunting, the witness and his wife both noticed a strong musty odor and the witness heard loud wood-on-wood-like raps from nearby woods. While walking back to their vehicle, they discovered two very large five-toed footprints in firm soil that they estimated were one or two days old. No creature was seen.

OdorWood knockTracks
17 October 2005 Buford, Rio Blanco County, Colorado Class B #13699

Possible knocks heard near the Flat Tops Wilderness area of White River National Forest

The witness and his father were dressing an elk on a steep mountain slide when they heard 8-10 loud rhythmic knocks from dense timber about 100 yards away to the south. The sounds were described as crisp impacts like rock on wood and unlike anything they could identify. The father had heard similar loud knocks earlier that same morning from up the slide.

Wood knock
8 September 2005 Leadville, Lake County, Colorado Class B #12904

Notes from the Colorado BFRO Expedition

During a daytime hike up a drainage on 10 Sept, the witness stopped at an old hunting camp and heard two clear wood knocks about 150-200 yards away. After confirming by radio that no other participants were nearby or knocking, the witness knocked back and received an immediate two-knock reply from slightly farther away. Further knocks and whoops over about 30 minutes drew no additional replies, and no movement or odor was noticed. The witness then returned to camp and later revisited the area by ATV with others.

Wood knock
1 June 2004 Bayfield, Archuleta County, Colorado Class B #9018

Campers driven off mountain by unseen intruders

Three campers were around a late-night campfire when they heard repeated series of deep two-tone howls from hills to the north and south and a loud tree-impact sound. One source of howls moved from about 100 yards west to about 50 yards in the treeline, appearing to exchange calls with a distant source while crashing through brush toward camp. Alarmed, the group packed under guard and drove out, hearing the howls again from about a mile behind them. They later interpreted the incident as possibly involving three large communicating beings.

HowlWood knockFootsteps
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
November 2001 Victor, Teller County, Colorado Class B #3588

Hunting party hears vocalization, wood knocks; finds elk carcass, off Gold Camp Road near Victor, in Pike Nat'l Forest

While guiding two clients and accompanied by his wife on an elk hunt, the witness reported hearing a low guttural vocalization that he did not recognize as elk or bear. After moving to an aspen grove, the group heard loud repeated knocking sounds likened to logs or sticks hitting trees. The next day after snowfall, the witness returned and found a fresh cow elk carcass with its chest torn open and large indistinct tracks with a long stride nearby.

VocalizationWood knockTracks