 Since the collapse, the mountain has experienced shaking and periodic rockfalls.During the late 1930s, Joppenbergh became the site of several ski jumping competitions, which continued until the early 1940s.The original slope was designed by Harold Schelderup for Rosendale's first competition in 1937; Schelderup himself skied that July, after the slope was coated with borax for a summer competition.