Union Pass

Listed on the National Register of Historic Places in 1969.

From the record

“Union Pass is a high mountain pass in the Wind River Range in Fremont County of western Wyoming in the United States. The pass is located on the Continental Divide between the Gros Ventre mountains on the west and the Wind River Range on the east.”
Wikipedia article Union Pass, CC BY-SA 4.0.

One of 31 National Register listings published here for Fremont County · listed in 1969 · category: Site.

Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

The listing

What is counted as historic. The nomination lists 1 site as contributing to the listing.
Address. On the Continental Divide in Teton National Forest, Unknown
When was it listed? April 1969
Category. site
Census division. Dubois
National Register reference number. 69000367 - the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.

Fires near this property

10 since 1993

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 10 fires within 5 miles of Union Pass between 1993 and 2017, burning about 2 acres in total. 8 started naturally. None was recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.

Reported cause	Fires
Natural	8
Recreation and ceremony	2

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

Date	Cause	Size	Reported by	Name on the report
6 September 2011	Natural	under an acre	Bridger-Teton National Forest	MERIDIAN
26 August 2011	Natural	under an acre	Shoshone National Forest	SNOW SHOE
22 August 2016	Natural	under an acre	Shoshone National Forest	UNION
21 August 2017	Recreation and ceremony	under an acre	Shoshone National Forest	MOON LAKE
20 August 2002	Natural	under an acre	Bridger-Teton National Forest	GRASS LAKE
20 August 1993	Natural	under an acre	Shoshone National Forest	COOK
18 August 2003	Natural	under an acre	Shoshone National Forest	ENERGIZER
16 August 1995	Natural	under an acre	Shoshone National Forest	UNION

Every fire recorded in Fremont County

Mines and quarries near this property

4 within 5 miles

Regional context, not property-specific evidence. The federal mineral resources record lists 4 workings within 5 miles of Union Pass: 2 occurrences, 2 prospects. None of them still produces. What was taken out: Uranium, Gypsum-Anhydrite, Gold. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Site	Commodity	Status	Recorded
Unknown	Gypsum-Anhydrite	Occurrence
Unknown	Gold	Occurrence
Long Shot No 4	Uranium	Prospect	vein-type uranium
Longshot Claim	Uranium	Prospect	Uranophane

Every working recorded in Fremont County

Map coverage status

No historic map-sheet match is published for this property yet. That does not mean no map exists. This record needs a coordinate-quality review before it can be joined to a sheet boundary. Browse the county's mapped places while that work is pending.

Sources for this property

National Archives record	The nomination case file for reference 69000367 in Record Group 79.
Wikipedia article	Community-written account of this property, licensed CC BY-SA.
Fremont County	All 31 listed properties in this county.

Provenance

Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.