Class B First-hand BFRO #16714

Two men remember hearing bone-chilling scream while parking at lookout point in Stone State Park

Summer 1970 late at night, around midnight or 1 a.m. Sioux City, Woodbury County, Iowa 4 witnesses

Account

In summer 1970 the witness parked at a Stone State Park overlook at night with three companions. While he lay on a blanket with his date near bushes, a very loud scream erupted from very close by. The pair fled to the convertible and drove away, leaving the blanket behind. Decades later the witness interpreted the screamer as a female bigfoot startled at close range.

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

Scream

Facts & provenance

Each value names where it came from.

Date	Summer 1970 Stated BFRO report #16714 · BFRO report, labelled fields: Year, Season
Time of day	late at night, around midnight or 1 a.m. Stated BFRO report #16714 · BFRO report, “Time And Conditions” section
Place	Sioux City, Woodbury County, Iowa Stated BFRO report #16714 · BFRO report, labelled fields: State, County, Nearest Town, Location Details, Nearest Road
Map point	42.56, -96.48 (± 1000 m) Stated BFRO map layer · BFRO published map layer · read with 85% confidence BFRO map layer point for report 16714 with published boundary
Account type	First-hand Stated BFRO report #16714 · BFRO report, “Observed” section
Witnesses	4 Derived BFRO report #16714 · BFRO report, “Follow-Up” section · read with 85% confidence
Witness was	parking at overlook with date on blanket Stated BFRO report #16714 · BFRO report, “Observed” section
Witness's word for it	female bigfoot Stated BFRO report #16714 · BFRO report, “Follow-Up” section · read with 85% confidence
Source classification	Class B Stated BFRO report #16714 · 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: Steve Moon (BFRO)

Follow-up

An investigator conducted telephone interviews with the witness and the companion in the car and compiled background on the park.

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.

BFRO report #16714 Primary

Published 2006-11-20 Retrieved 2026-09-25 Version 1 Hash b332484f94ff

BFRO - Bigfoot Field Researchers Organization
BFRO map layer Reference

Retrieved 2026-09-24 Version 1 Hash cfb8a3d423b7

BFRO - Bigfoot Field Researchers Organization

The report refers to

“August 1974 garden and 7-foot reports near park”
Not in the Anomadex yet
“Summer 1971 Stone Park hilltop sighting”
Not in the Anomadex yet
“teenagers hitting man-like creature report”
Not in the Anomadex yet
“January 1972 7-foot sighting near Stone Park”
Not in the Anomadex yet
“End August 1974 house sighting”
Not in the Anomadex yet
“August 1974 garden sighting with footprints”
Not in the Anomadex yet
“1974 deer rifle wounding report near Stone State Park”
Not in the Anomadex yet
“1974 high-powered rifle shooting report”
Not in the Anomadex yet
“teenagers running over small individual report”
Not in the Anomadex yet
“1997 newspaper observation and tracks report”
Not in the Anomadex yet
“newspaper archives about Riverside area activity”
Not in the Anomadex yet