The erosive action of the sand of the desert is said to be gradually cutting off the Sphinx's head.

Characteristic of the country are the enormous fissures which divide it, formed in the course of ages by the erosive action of water.

They are formed by the erosive action of the water wearing out the softer portions of the rock beneath a harder roof or wall.

The real cave is the one where the limestone is eaten out by the erosive action of the water attacking the calcium of the rock.

Erosive action of water on limestone.