Caves of the Mendip Hills 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 towards sea level by
Wookey Hole Caves "The End of Time" (2009), including a scene with the Doctor sharing thoughts and visions with the Ood. On 1 August 2006, CNN reported that Barney, a Doberman Pinscher employed as a security dog at Wookey Hole, had destroyed parts of a valuable collection of teddy bears, including one which had belonged to Elvis Presley, which was estimated to be worth £40,000 (US$75,000). The insurance company insuring the exhibition of stuffed animals had insisted on having guard dog protection. In February 2009 Cottle turned the Victorian bowling green next to the caves into a crazy golf course without first obtaining