Facility · Wyoming ·
Managed by the Bureau of Land Management
Lander Field Office (Bureau of Land Management WY) · Open Access

As the dominant landmark of the Sweetwater Valley, the unmistakable "gun sight" notch in the summit of Split Rock aimed the emigrants directly at Great South Pass, still more than 75 miles to the west. A BLM interpretive site is at this location.
A second highway turn-out a few miles west offers a better (although reverse) view of the "split" and also a look at the Old Castle, a smaller landmark south of the Trail and highway.
The site has restrooms, trash collection and the hard-surfaced interpretive trail is ADA accessible.
From Jeffrey City, travel east on US Highway 287 approximately 18 miles and turn north following highway signs.
42.45300, -107.54580 · 42°27'10.8"N 107°32'44.9"W
Typically 87°F in Jul, down to 32°F in Jan.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 32 | 36 | 47 | 57 | 68 | 78 | 87 | 85 | 74 | 60 | 44 | 33 |
| Low °F | 14 | 16 | 23 | 30 | 39 | 46 | 54 | 53 | 45 | 33 | 22 | 14 |
| Precip in | — | — | — | — | — | — | — | — | — | — | — | — |
1991–2020 averages from the nearest NOAA station, 8.1 mi away — not measured at the facility itself, and elevation can make a real difference over that distance.
Recreation.gov last updated this record on 2026-02-25.
Facility information and photographs from Recreation.gov (RIDB). SpotOpened is not affiliated with Recreation.gov or any federal agency.
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