Class B First-hand BFRO #11702

Campers hear scream and witness rock throwing at Twin Sister Lakes

8 August 2001 after nightfall Naches, Yakima County, Washington 3 witnesses

Account

The witness and two companions were camping at a remote lake past Bumping Lake. After nightfall on their final night, they heard single rocks striking and bouncing down the rocky slope about 60-70 yards from camp, repeating in different spots. They left camp with a lantern, guns and an axe to investigate, but the sounds stopped as they approached and nothing was seen. The witness later wondered if the sounds could have been something throwing rocks toward camp.

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

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Interaction

Facts & provenance

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Date
8 August 2001
Stated BFRO report #11702 · BFRO report, labelled fields: Year, Month, Date
Time of day
after nightfall
Stated BFRO report #11702 · BFRO report, “Time And Conditions” section
Place
Naches, Yakima County, Washington
Stated BFRO report #11702 · BFRO report, labelled fields: State, County, Nearest Town, Location Details, Nearest Road
Map point
46.75, -121.36 (± 1000 m)
Stated BFRO map layer · BFRO published map layer · read with 85% confidence
BFRO map layer point for report 11702 (4 decimals, no boundary)
Account type
First-hand
Stated BFRO report #11702 · BFRO report, “Observed” section
Witnesses
3
Derived BFRO report #11702 · BFRO report, “Observed” section
Witness was
camping at a remote lakeside camp
Stated BFRO report #11702 · BFRO report, “Observed” section
Source classification
Class B
Stated BFRO report #11702 · 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
Jim Von Lossow (BFRO)
Follow-up

An investigator spoke with the witness by phone for nearly an hour and recorded additional details about the scream, rock sounds, temperatures and moon phase.

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 2005-05-14 Retrieved 2026-09-24 Version 1 Hash 80300b8abb86
    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

  • “July 2000 (class B) hearing sound around bumping lake”
    Not in the Anomadex yet