From a pad in the cottonwoods along the Belle Fourche River, Devils Tower's grey columns stand straight up over the treetops, still catching light after the bottomland has gone to shade. By then the only sound left in camp is the river. Down at the monument gate, the KOA runs its outdoor movie screen against that same skyline, so the kids watch the film from camp chairs with the Tower standing dark behind it.
The drive from Gillette is open prairie until the Tower shows on the horizon, a flat-topped stump of stone that stays in view for miles before the turnoff. Below it, the Park Service loop and that KOA make two different trips out of the same rock. The monument's campground is dry camping right under the columns, a couple of quiet nights on your own water. The KOA is the plugged-in version, the air running through a July afternoon and the movie a short walk from the rig, and families tend to settle in there for the whole stay.
Belle Fourche River Campground or the KOA at the gate
Down in the bottomland, the Belle Fourche River Campground puts its sites close enough that the columns fill the sky over camp. As of September 2026 it takes RVs up to 35 feet on its pull-through sites and has no hookups, which makes it the number to settle before you book a rig. A Class C at or under that length sleeps in the cottonwoods. Two people who'd rather skip the tape measure can size down to a campervan, and the Wyoming campervan page covers the Tower Trail around the base and the climbing on the columns.
Anything longer, or any stay that wants power all day, goes to the Devils Tower KOA by the gate. As of September 2026 its pull-throughs run to 70 feet, it takes rigs up to 100 feet, and its 50-amp service runs from mid-May through mid-October, snow permitting. From a pull-through there, the Tower fills the windshield.
Keyhole State Park, a reservoir weekend near Moorcroft
Keyhole's reservoir opens up along the road to the Tower, a wide sheet of water under an open prairie sky, with the camps strung along its shore. Plenty of Gillette families make it a weekend on its own, the rig backed in near the water and the kids down at the lake until dark. On a Tower trip it's the natural first night, especially after a late start out of town.
Tatanka has electric and water sites, and Coulter Bay has electric sites. Reservations for both run mid-May through mid-September on Reserve.Wyoming.Gov, and outside that window the sites are first come. If the rig isn't ready until evening, the RV sites at Gillette's Cam-plex event grounds carry 30 and 50 amp hookups for a plugged-in night in town instead.
Strung together, the nights fall into an easy order. Tatanka's water fills the tank, a couple of dry nights under the Tower run off it, and the KOA's hookups settle the tanks before the drive home. Some rigs keep going instead, on to Spearfish, Deadwood and Rapid City and a loop through the dark pines of the Black Hills. The Black Hills and Sturgis RV pages pick up the nights on that side of the state line.