It is northeast of Bruneau and fifteen miles (25 km) south of Mountain Home.

[3][A] The park encompasses 4,800 acres (7.5 sq mi; 19 km2) and features the Bruneau Dunes Observatory, where visitors can use a telescope for stargazing.

[6] The state park includes desert, dune, prairie, lake and marsh habitat.

Additional acreage was acquired in 1980 and in 1984, bringing the park's total area to 4,800 acres (19 km2).

[2] Activities include sandboarding, fishing, birdwatching, camping, hiking, swimming, and viewing the stars at the public observatory.