Class B First-hand BFRO #17265

Possible bigfoot scream heard by hikers in Rock Canyon, in the Wasatch Mountains

March 2003 about 11:30 to 11:45pm Provo, Utah County, Utah 4 witnesses

Account

Four companions on a nighttime hike in a canyon stopped when they heard an extremely loud distant sound lasting 15-20 seconds that echoed through the mountains. The sound began like a distant motorcycle and shifted into a mechanical scream, frightening the group into running down to the valley bottom. They could not identify the source, and the reporter later felt an online Bigfoot scream recording was the closest match.

Summary drafted by AI from the source report and checked by code before I publish it. The witness's own words remain with the publisher — read the original report .

What was reported

Every kind of observation in the account. Select one to find other encounters with it.

Sounds

Facts & provenance

Each value names where it came from.

Date
March 2003
Stated BFRO report #17265 · BFRO report, labelled fields: Year, Month
Time of day
about 11:30 to 11:45pm
Stated BFRO report #17265 · BFRO report, “Time And Conditions” section
Place
Provo, Utah County, Utah
Stated BFRO report #17265 · BFRO report, labelled fields: State, County, Nearest Town, Location Details, Nearest Road
Map point
40.27, -111.60 (± 2 km)
Stated BFRO map layer · BFRO published map layer · read with 85% confidence
BFRO map layer point for report 17265 with published boundary
Account type
First-hand
Stated BFRO report #17265 · BFRO report, “Observed” section
Witnesses
4
Stated BFRO report #17265 · BFRO report, “Other Witnesses” section
Witness was
hiking at night
Stated BFRO report #17265 · BFRO report, “Other Witnesses” section
Source classification
Class B
Stated BFRO report #17265 · BFRO classification label

Evidence & investigation

What the source says was found or done. Claimed evidence is listed as claimed; the Anomadex has not examined it.

Investigated by
Chad Hamblin (BFRO)
Follow-up

The witness and companions returned to the area multiple times with video and audio devices but captured nothing.

BFRO report, “Follow-Up” section

Source timeline

Every record this entry is built from, earliest known first. Records are versioned and never edited in place.

  1. Published 2007-01-10 Retrieved 2026-09-24 Version 1 Hash 7a95c11f2a25
    BFRO - Bigfoot Field Researchers Organization
  2. BFRO map layer Reference
    Retrieved 2026-09-24 Version 1 Hash cfb8a3d423b7
    BFRO - Bigfoot Field Researchers Organization

The report refers to

  • “a Bigfoot audio”
    Not in the Anomadex yet