This paper gives a brief description of the natural caves that have been formed by landslipping in the Cotswolds between the town of Cheltenham and the M4 corridor. The paper is an overview and includes sites that have previously been published, new data from these sites, as well as several new sites. Surveys of the main caves are presented. It is argued that the mineral deposit described by geologists as “calcite bands” does not represent regional palaeo- water table levels, but has a speleological origin.