You scale the railing with ease and perch on two feet, despite the thin rail. You push off, and the ground rises to meet you. Your body takes over and you tuck so you land hands first. Your elbows bend, your head tucks and you somersault, the impact of the fall spread out over your body. You roll to your feet and look up. Standing by the railing are three people. Two of them are hikers, shocked by your fall. One is a boy all in black. His mouth is set in a grim line.