You are a peregrine on the granite of El Capitan, nine hundred metres above the valley floor. Hold Fly to beat your wings. Let go and you glide. Hold Dive and you stoop — the fastest animal alive, three hundred kilometres an hour, straight down the face.
El Capitan launches you off the summit. The Forest starts you low over El Cap Meadow among the pines. Both run the same pre-flight check first.