The Mendip Cave Registry and Archive (MCRA) has the object of recording and indexing all available information on caves, mines, rock shelters and other sites of speleological interest primarily in the area of Bristol, Somerset, Bath and Wiltshire in South West England.
The MCRA was formed as the Mendip Cave Registry in January 1956.
In 1969 the Registry ceased to function but it was revived in 1994 by Dave Irwin.
These are: Government organized national cave registries are common in countries where such karst features is relevant to infrastructure projects, such as water supply and road building.
Further information can be found on the UIS Informatics Commission contacts page.