Mendip Hills the hills. The western end of the hills is crossed by the M5 motorway and A38. Further east, and running almost north to south, are the A37 and A39. A wide range of outdoor sports and leisure activities take place in the Mendips, many based on the particular geology of the area. The hills are recognised as a national centre for caving and cave diving, as well as being popular with climbers, hillwalkers and natural historians. Wookey Hole Caves and some of the caves in Cheddar Gorge are open as show caves; however, many of the caves of the Mendip
Caves of the Tullybrack and Belmore hills which it is formed comprises Dartry Limestone and Knockmore Limestone. The site, which is designated a PASSI, features a narrow bedding plane leading for 12 m to a waterfall and a duck. It has been speculated that the water from this sink also joins the Noon's Hole drainage system. Caves of the Tullybrack and Belmore hills The Caves of the Tullybrack and Belmore hills can be found in south-west County Fermanagh, Northern Ireland. The region is also described as the West Fermanagh Scarplands by environmental agencies and shares many similar karst features with the nearby Marble Arch Caves Global Geopark.