caving

collapsing of the walls of the wellbore. Also called sloughing.

Caving

Caving — also traditionally known as spelunking in the United States and Canada and potholing in the United Kingdom and Ireland — is the recreational pastime of exploring wild (generally non-commercial) cave systems. In contrast, speleology is the scientific study of caves and the cave environment. The challenges involved in caving vary accord...
Found on http://en.wikipedia.org/wiki/Caving

Caving

• (p. pr. & vb. n.) of Cave
Found on http://thinkexist.com/dictionary/meaning/caving/

CAVING

The entering and exploration of caves.
Found on http://www.cancaver.ca/docs/glossary.htm
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