scrambling
n.— «They were doing what’s known as “scrambling,” or climbing without special gear—but were apparently doing so in a “no scrambling” area. Climbers are required to have a permit and proper gear if they climb above the ten-foot mark in the park.» —“2 Teens Fall At Garden Of The Gods” in Colorado Springs, Colorado KCNC-TV Mar. 26, 2007. (source: Double-Tongued Dictionary)