You climb 470 feet of loose sand at Bruneau Dunes State Park, each step sliding back a little, the dune rising alone off the desert floor south of Nampa, one sand face standing by itself. The slope is steep enough that figures on it look small, and from the top the desert runs out in every direction. You ride a board down the face, sandboard tracks scoring the slope by afternoon. After dark the observatory dome opens onto a dark desert sky above the dune.
Spring and fall are the season for the dune and the river bottom, and in summer the campground loops fill with mosquitoes. Idaho Parks rents sandboards until 3pm, and they pull them once the air hits 80 degrees, whichever comes first. You have to be 18 to rent.
Book an electric site in the Broken Wheel or Eagle Cove loop at Bruneau Dunes before you book the van, because those loops take the overnight and they book up. If you roll in late without a reserved pad, the equestrian campground is first-come overflow, corrals included, not a guaranteed pad. Celebration Park on the Snake is primitive overflow if those loops are full, a first-come night on the river bottom instead of the electric loop. Bruneau Dunes stays open in winter, though the electric loop is the only comfortable option for a van then.
Celebration Park on the Snake River
Basalt boulders sit in the Snake River bottom, flood-dropped and carved with petroglyphs. A walking path threads the rock field, stone to stone, with the river moving beside you. You spend the afternoon reading the carvings in place at Idaho's archaeological park.
Raptors ride thermals off the canyon rim in the Morley Nelson Snake River Birds of Prey area above the river. You watch from the rim and sleep at Celebration Park on the river bottom. There is no separate overnight up on those cliffs.
Camping at Celebration Park is primitive and first-come, with no electrical hookups. Canyon County charges $5 a night, with a 3-day limit inside a 30-day window, as of September 2026. The van has to fit inside the site's parking spur, and if you need more sleeping space, or a longer rig than that spur, look at RVs for rent in Nampa. The park stays open year-round, fully exposed, with no shade and no shelter, and potable water sits outside the visitor center.
A narrow fall at Jump Creek drops into a grotto pool boxed in by basalt, where the walls stand close and the water hits the pool at the bottom. An easy trail runs from the lower lot into the grotto, and the site is day use only.
The Sawtooths, Idaho 21, and the Payette hot springs are a campervan trip from Boise. For the rest of Idaho, start on the Idaho campervan page.