The scree, crags and rocky ground, areas of loose rocks or stones more or less large (larger than a football about) can be ground fairly easy to navigate on foot, as long as they know how. Failure to understand and master the techniques of running in this type of soil, a fall can cause serious accidents, so always keep in mind:
Pay close attention to the safety distance between group members, which must be greater the higher probability of falling rocks or landslides, and (in turn and for the same reason) to steeper the slope, whether we as if we are going down. The reason: to give time to the partner who preceded us (down) or above us (up) to avoid falling rocks due to our departure. We must warn of falling rocks, especially on the downhills, when you see them before us may not come.