Caves of the Mendip Hills caves are listed below Caves of the Mendip Hills The caves of the Mendip Hills are formed by the particular geology of the Mendip Hills: large areas of limestone worn away by water makes it a national centre for caving. The hills conceal the largest underground river system in Britain. The hills consist of anticlines of Carboniferous Limestone lying over Devonian Old Red Sandstone, with the sandstone exposed on the summits. When a surface stream running off the sandstone reaches the limestone it sinks below ground through a "swallet", (also known locally as a "slocker"), continuing on its way down
Ngarua Caves Ngarua Caves The Ngarua Caves are a series of limestone caves in the Takaka Hill range south of Abel Tasman National Park. The caves are located close to Takaka Hill's summit, adjacent to State Highway 60 as it winds its way over the Takaka Hill between Motueka and Upper Takaka. Scheduled tours suitable for people of all ages are provided by a commercial operator from the car park and cafe situated at the cave entrance. The caves cannot be visited unattended. Ngarua Caves contain a variety of cave formations along a comfortable walkway through the caves, as well as notable