Green Mountain
Rockhounding / fossil site · Fremont County, WY
Green Mountain is listed in the federal Recreation Information Database with rockhounding as an activity. Check current collecting or panning rules with the managing agency.

| Type | Rockhounding / fossil site (Facility) |
|---|---|
| Location | Fremont County, Wyoming |
| Coordinates | 42.34444, -107.73279 (map) |
| Managed by | Call to confirm |
| Fees | Call to confirm |
| Hours | Call to confirm |
| Phone | 307-332-8400 |
| Website | Not listed in source |
About this site
Green Mountain is located in southcentral Wyoming about ten miles south of Jeffrey City and about 50 miles northwest of Rawlins (as the crow flies). It contains the Cottonwood Campground , the only developed recreation facilities in an alpine setting in a several hundred square-mile area. Named for the green timber which covers it, Green Mountain and its neighbors, Crooks Mountain to the west and Whiskey Peak to the east, comprise a small mountain range by Rocky Mountain standards. Green Mountain has no hard rock core but was formed from sediments eroded from the much older Granite Mountains just to the north. Crooks Mountain and its adjacent Crooks Gap and Crooks Peak were named after Civil War veteran and Indian fighter General George H. Crook. The area has spectacular views of the surrounding Wyoming landscapes and excellent deer and elk hunting. …
Description from Recreation Information Database (RIDB).
Directions
The best access route to Green Mountain is Green Mountain Road (BLM Road 2411), an improved gravel road which intersects U.S. Highway 287 about six miles east of Jeffrey City.
Verify before visiting. Hours, fees, access and collecting rules change, and some listings come from community-edited data. Call or check the operator's official page before you go. Details we could not confirm are marked "call to confirm".
Nearby sites
- Hidee Gold Mine – Gilpin County, CO, 212 mi
- Hopemore Mine Tour – Leadville, CO, 228 mi
- Big Thunder Gold Mine – Keystone, SD, 243 mi
- Broken Boot Gold Mine – Deadwood, SD, 244 mi
- Cascade Campground (Chaffee County, CO) – Chaffee County, CO, 263 mi
Source: RIDB record 254060 (Recreation.gov / RIDB, public domain). Data retrieved 2026-11-04.