Hours : Badlands National Park is open 24 hours a day, seven days per week. Entrance fees are collected year round. The park is located within the Mountain Time Zone. Ben Reifel Visitor Center 2007 Hours of Operation 8 a.m. - 5 p.m. (April 15 - June 2) 8 a.m. to 6 p.m. (June 3 - August 18) 8 a.m. - 5 p.m. (August 19 - October 13) 9 a.m. - 4 p.m. (October 14 - April 2008) CLOSED on Thanksgiving, Christmas Day, and New Year's Day

Admission : Private, non-commercial vehicle $15 - Valid for 7 days / Individual - hike, bicycle $7 - Valid for 7 days / Motorcycle $10 - Valid for 7 days / Badlands National Park Annual Pass $30 - Valid for one year from month of purchase.

Containing the world's richest Oligocene epoch fossil beds, dating 37-28 million years old, the evolutionary stories of mammals such as the horse and rhinoceros arise from the 244,000 acres of sharply eroded buttes, pinnacles, and spires. Bison, bighorn sheep, endangered black-footed ferrets, and swift fox roam one of the largest, protected mixed-grass prairies in the United States.