Slope; Geology, rock detritus at base of slope.
Rock detritus or debris at the base of a slope
The pile of rubble and sediment that forms an ascending slope at the foot of a mountain range or cliff.
The rock fragments that form a talus are usually slide rock or pieces broken off by frost action. As fragments are loosened they clatter downward in a series of free falls, bounces, and slides. With time, the rock waste builds in a heap or sheet of rubble that may eventually bury even the upper cliffs, and the growth of the talus then stops. Usually, however, erosional forces decompose the rock waste so that a talus stays restricted to lower slopes.

1. The human tarsal bone that bears the weight of the body and that together with the tibia and fibula forms the ankle joint
2. The entire ankle