Wind moves these mountains of granulated quartz eight feet a year, erasing the recurring ruts made by armies of off-road vehicles that climb the often 400-foot (122-meter) high dunes. managed by the Bureau of Land Management (BLM), this area is also a Wilderness Study Area supporting large herds of elk, mule deer, and moose in the winter months.

Aside from high off-road vehicle traffic, day hikes and horseback rides are no-trace options for exploring the 11,000 acres of shifting sand. Sledding is popular in the winter.

The dunes are accessible year round.

Fees: No fee (Camping is $25-$65/day)