Book excerpt: Mendip - Its Swallet Caves and Rock Shelters, Second Edition provides detailed descriptions of caves and rock shelters of the Mendip Hills. The book contains photographs, surveys, and descriptions of rock caves in Mendip Hills such as Swildon's Hole, Long Wood Swallet, Eastwater Cavern, Lamb Lair, and G.B. Cave. Also included are descriptions of the caves of the Burrington District, western and eastern Mendip, and discussions on the antiquity of the Mendip caves and the distribution of the Mendip swallets. Spelunkers or potholers and speleologists will find the book very informative and interesting.