Aerial Tours--If you want to see the Badlands from above, you have two options: helicopter or hot-air balloon. Badger Helicopters (tel. 605/433-5322 or 608/752-4001) takes off near the park's east entrance (take I-90, Exit 131) between mid-May and mid-September. Call for current rates.
If it's a hot-air balloon adventure you're looking for, contact Black Hills Balloons, P.O. Box 210, Custer, SD 57730-0210 (tel. 605/673-2520; fax 605/673-4092), which offers flights over the Badlands and Black Hills year-round for about $210 per person.