Bureau of Land Management

Prior Flat Campground

The Prior Flat Campground has 15 campsites and a vault toilet on about 9 acres. It has one pull-through, picnic tables, fire rings/grills and parking spurs. Typical use season is from June 1st through November 15th because the roads become impassable after heavy rain and snow melt. No horses allowed in campground. The campground is located at the foot of the Shirley Mountains, a remote range in a large basin between the Medicine Bow and the Ferris Mountains. Visitors will enjoy the aspen, limber pine, lodgepole pine, big sagebrush and can view pronghorn, mule deer, elk, coyotes, grouse and golden eagles.

First-come, first-served

Limited data

The federal database holds very little for this campground, so this page is short. For current conditions and details, the official links in the sidebar are the better source.

Getting there

From Medicine Bow, take Wyo 487 north approximately 21 miles and turn left onto Wyo 77. Follow Wyo 77 about 9 miles and take County Road 102 west for about 9 miles to the Shirley Mountain Loop Road (BLM Road 3115). Campground is just up the hill about 1/4 mile.

Campgrounds nearby

First-come

North Platte River

Pete'S Draw Campground

23.9 miles away

First-come

North Platte River

Golden Currant Campground

29.3 miles away

First-come

BLM

Chalk Bluffs Campground

30 miles away

First-come

North Platte River

Buffaloberry Campground

30.5 miles away

First-come

Muddy Mountain Environmental Education Area

Lodgepole Campground

34.3 miles away

First-come

Muddy Mountain Environmental Education Area

Rim Campground

34.6 miles away

Data source: Recreation.gov RIDB, retrieved August 30, 2026. The Campsite Atlas is an independent publication and is not affiliated with or endorsed by the Recreation.gov or any federal agency. Always confirm critical details on the official Recreation.gov page before you travel.