UBSS Proceedings 16(2), pp 105-108
Ubley Conduit: An underground streamway in Triassic clay at Ubley, North Mendip
1982
Authors: Stanton, W.I.
Excavation for a water main in 1979 revealed an underground stream flowing through a pipe-like conduit in clay, 2 metres below ground. Several active sinkholes near the site are linked to the streamway. It is thought that the streamway developed as a cave in a thin calcareous bed, interbedded among mudstones, that has been locally removed by solution.