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.

TypeRockhounding / fossil site (Facility)
LocationFremont County, Wyoming
Coordinates42.34444, -107.73279 (map)
Managed byCall to confirm
FeesCall to confirm
HoursCall to confirm
Phone307-332-8400
WebsiteNot 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

Source: RIDB record 254060 (Recreation.gov / RIDB, public domain). Data retrieved 2026-11-04.

Rockhounding and gold panning gear checklist