Scrambling is an activity that falls somewhere in between hiking and climbing. You don't require any protective equipment (i.e. ropes, crampons, etc.) but usually the hands are used to balance on terrain or to ascend almost like an easy form of rock climbing. This activity covers a wide range of terrain, including steep scree and talus slopes, exposed ridges, and cliff bands. Scrambles are graded using the YDS system between Class I, an easy hike and Class V, technical terrain that is essentially rock climbing.