Swildon's Hole Cavern

The cave was first entered on 16 August 1901 by members of the Wells Natural History and Archaeological Society. Very rapid progression was made to what is now known as the 40 foot pot. Between 1903 and 1910, in spite of access being banned by the landowner, various trips took place to photograph and explore the passages. In 1914 the limit of exploration was extended to Twenty Foot Pot, and in 1921 the first of the sumps was reached, but not passed (despite attempts to make progress by blasting). Sump 1 was finally successfully dived in 1936, and Sump 2 was passed soon afterwards. By this point a length of cave only one-fifth of the amount known today had been discovered. Ever since 1936…

The cave contains an active streamway, which has caused a highly varied cave system. Areas of the system range from low passages, through which cavers must crawl, to impressive chambers with sheer drops, and from dry fossil passages to thundering waterfalls and its infamous sumps. A plaque mounted on a stone plinth near Priddy village green shows a plan of the cave, overlaying a map of the village (see right). The cave exhibits a combination of vadose development (formed above the water table), including continuing formation of the main streamway, and phreatic passages (formed below a latterly lowered water table). These resulted in very different types of passageway, with the phreatic…

The entrance to Swildon's Hole is now a small triangular opening contained within a stone blockhouse in a clump of trees 550 m north-east of Manor Farm, Priddy. Swildon's Hole is a very popular cave and there are often several separate groups underground at the same time.