U.S. Forest Service · Custer Gallatin National Forest

Reva Gap Campground

A campground with 8 sites located in the Slim Buttes Unit near the Castles National Natural Landmark, one of two on the Sioux Ranger District. The campground is within commuting distance to Buffalo, SD. . Camp sites: 8. Accessible Facilities: Toilet. Trash Pickup: No. Firewood: No. No Reservations: This campground does not use a reservation system, it is managed on a first-come, first-served basis. There is a 14 day stay limit. Information: Sioux District Office Box 37, Main & First Camp Crook, SD 57724 (605) 797-4432 .

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 Buffalo, SD take Hwy 20 approximately 20 miles to Forest Road 3126. Turn right and campground will be on your left.

Campgrounds nearby

First-come

Custer Gallatin National Forest

Picnic Spring Campground

28.3 miles away

First-come

Custer Gallatin National Forest

Wickham Gulch Campground

43.7 miles away

First-come

Custer Gallatin National Forest

Lantis Spring Campground

49.1 miles away

First-come

Custer Gallatin National Forest

Ekalaka Park Campground

67.6 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.