56640010_2652986314776549_9123150211953197056_o Ondra sits comfortably in the hand jam. Photo: Vladek Zumr Share this Facebook Icon Twitter Icon Email Icon Join Gym Climber Create a personalized feed and bookmark your favorites. Join for free Already have an account? Sign In Join Gym Climber Create a personalized feed and bookmark your favorites. Join for free Already have an account? Sign In Get access to everything we publish when you sign up for Outside+.