Class B First-hand BFRO #57939

Possible knocks heard in a neighborhood near Protivin

15 June 2017 6:30AM Protivin, Chickasaw County, Iowa 2 witnesses

Account

The witness and a companion were on an early morning walk near their home when they heard two loud knocks a few seconds apart. They stopped and could not identify the source of the sounds. The witness noted long familiarity with the local woods from hunting and found the sound unfamiliar.

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
15 June 2017
Stated BFRO report #57939 · BFRO report, labelled fields: Year, Month, Date
Time of day
6:30AM
Stated BFRO report #57939 · BFRO report, “Time And Conditions” section
Place
Protivin, Chickasaw County, Iowa
Stated BFRO report #57939 · BFRO report, labelled fields: State, County, Nearest Town, Location Details
Map point
43.19, -92.16 (± 1000 m)
Stated BFRO map layer · BFRO published map layer · read with 85% confidence
BFRO map layer point for report 57939 with published boundary
Account type
First-hand
Derived BFRO report #57939 · BFRO report, “Observed” section
Witnesses
2
Stated BFRO report #57939 · BFRO report, “Other Witnesses” section
Witness was
walking near home
Stated BFRO report #57939 · BFRO report, “Observed” section
Source classification
Class B
Stated BFRO report #57939 · 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
TK Bell (BFRO)

Source timeline

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

  1. Published 2017-07-25 Retrieved 2026-09-25 Version 1 Hash 129875ecfde9
    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

  • “several Bigfoot sightings in the Cardinal Marsh Wildlife Area”
    Not in the Anomadex yet