On Nov. 11, 1935, Capt. Albert W. Stevens and Capt. Orvil A. Anderson broke the world altitude record when they reached 74,000 feet above the earth in the Explorer II balloon. After taking off at 7 a.m. from the stratobowl 11 miles southwest of Rapid City, they reached 74,000 feet at 11:22 a.m. over Bennett County, then continued to soar east until they landed near White Lake at 3:10 p.m., about 240 miles away from their starting point.