First-hand
Related account
BFRO #64064
Unidentified sound near Jefferson, Colorado
on two previous occasions
Jefferson, Park County, Colorado
1 witness
Same witness, another occasion.
This event is described inside another report — Camper hears Sierra-type whoops and knocking near Lost Creek Wilderness, 35mi SW of Denver. It is catalogued separately because it is a different occasion, not a duplicate.
Account
The witness reports hearing an atmospheric deep humming like large turbines on two prior occasions in the same area.
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 |
on two previous occasions
|
|---|---|
| Place |
Jefferson, Park County, Colorado
|
| Map point |
39.30, -105.67 (± 1000 m)
The report places this event at its main event's location (SOURCE_MAP_LAYER)
|
| Witnesses |
1
|
Source timeline
Every record this entry is built from, earliest known first. Records are versioned and never edited in place.
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BFRO report #64064 Primary