Tension belay.—This is used when the leader, having placed a piton, wishes to lean back on his belay rope, either to rest or to drive in a higher piton. The piton belay position is used, except that the belayer, to support the leader, sits back into the rope and brings his key hand close in to his body to provide all possible friction.
Rock or tree belay.—Where possible, the leader passes
his rope behind rock projections or trees, which can serve the same protective purpose as pitons. Precaution: he should avoid passing the rope over sharp edges, or in crevices where the rope could jam or cause too much friction as he climbs beyond. When a rock or tree belay has been definitely established, the belayer should assume the piton-belay position.