Upper Flood Swallet

Upper Flood Swallet is a limestone cave system in the Mendip Hills that extends through several passages beneath the Somerset landscape. The cave features different geological formations and underground passages with varying characteristics throughout its length.

The cave system was discovered during heavy flooding events in the 1960s, which led to exploration of the limestone formations. Further breakthroughs came through expeditions carried out over several decades.

The Mendip Caving Group maintains and documents the cave system, contributing to scientific understanding of underground limestone formations in southern England.

Access is limited and requires advance planning and coordination with local caving organizations. Visits should be arranged with experienced guides to ensure safety in the underground environment.

One of the major discoveries was the clearing of new cave passages with unusual geological patterns through targeted excavation work. These sections reveal remarkable mineral formations and structures that highlight the scientific importance of the site.