An escarpment is an area of the Earth where elevation changes suddenly. Escarpment usually refers to the bottom of a cliff or a steep slope. (Scarp refers to the cliff itself.). Escarpments separate two level land surfaces. For example, an escarpment could be the area separating the lower parts of the coast from higher plateaus. An escarpment also usually indicates two different types of land, such as the area on a rocky beach where tall cliffs become rocky sand. One side of an escarpment could be rock from one geologic era, while the other side of the escarpment could be rock from a different geologic era.
25 in 30