Rock climber Peter Croft began what continues to be a long and illustrious climbing career in Squamish in the late 1970s. He astounded the climbing community by putting up a number of bold new free climbing routes on the Chief which, at the time, pushed the limits of what people thought was possible. More recently, Brad Zdanivsky became the first quadriplegic ever to reach the summit on 31 July 2005. In the summer of 2006, Sonnie Trotter established what was at the time considered to be the hardest traditionally protected single rock pitch in North America, and possibly the world: Cobra Crack (5.14).