Showing posts with label subterranean rocks. Show all posts
Showing posts with label subterranean rocks. Show all posts

Tuesday, 26 June 2012

Subsistence


What is it?

Subsistence is the phenomena where the ground starts to sink as a result of the subterranean erosion of rock or the creation of voids, or caves, through other means.

READ MORE about where and how Subsistence occurs.