Mam Tor - Izeria

Mam Tor is a 517 m (1,696 ft) hill near Castleton in the High Peak of Derbyshire, England. Its name means "mother hill", so called because frequent landslips on its eastern face have resulted in a multitude of "mini-hills" beneath it. These landslips, which are caused by unstable lower layers of shale, also give the hill its alternative name of Shivering Mountain. In 1979, the continual battle to maintain the A625 road (Sheffield to Chapel en le Frith) on the crumbling eastern side of the hill was lost when the road officially closed as a through-route, with the Fox House to Castleton section of the road being re-designated as the A6187. The hill is crowned by a late Bronze Age and early Iron Age univallate hill fort, and two Bronze Age bowl barrows. At the base of the Tor and nearby are four show caves: Blue John Cavern, Speedwell Cavern, Peak Cavern and Treak Cliff Cavern where lead, Blue John, fluorspar and other minerals were once mined. Mam Tor was declared to be one of the Seven Wonders of the Peak by Thomas Hobbes in his 1636 book De Mirabilibus Pecci.

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Odin Mine

Odin Mine is a disused lead mine in the Peak District National Park, situated at grid reference SK133835. It lies on a site of 25 hectares near the village of Castleton, England. It is the oldest documented mine in Derbyshire and is thought to be one of the oldest lead mines in England. The mine is a Scheduled Ancient Monument and has biological and geological significance within the Castleton Site of Special Scientific Interest.

Blue John Cavern

The Blue John Cavern is one of the four show caves in Castleton, Derbyshire, England. The others are Peak Cavern, Treak Cliff Cavern and Speedwell Cavern.

Treak Cliff Cavern

Treak Cliff Cavern is a show cave near Castleton in Derbyshire, England. It is part of the Castleton Site of Special Scientific Interest and one of only two sites where the ornamental mineral Blue John is still excavated (the other is the nearby Blue John Cavern). As part of an agreement with English Nature, the Blue John that can be seen in the show cave is not mined but it is extracted in small quantities from other areas of the cave and made into saleable items like bowls, jewellery, and ornaments. The cave comprises three sections, the Old Series, discovered by lead miners in the 18th century, the New Series, discovered during blasting in the 1920s, and the New Series Extensions, discovered in 2014. Only the Old Series contains Blue John, but the New Series is well decorated with flowstone, stalagmites, and stalactites. The New Series Extensions are also highly decorated, but are only accessible by experienced cavers. Three human skeletons and flint implements from the Neolithic era were found in a small cave nearby in 1921.

Giant's Hole

Giant's Hole is a well-known cave near Castleton in Derbyshire, consisting mostly of large passages. It is a stream-way cave, and part of the Karst topography of the area. There is a complex system connecting the cave to Oxlow Cavern and Maskhill Mine to the south. The Entrance Series is easily accessible making it a favourite with novices and groups. The stream that flows into the entrance can be followed through the cave, bypassing three sumps, to the East Canal, Giant's Hole's terminal sump. There are several major tributary passages and a high-level fossil series that provides an alternative route through the cave and makes up part of the classic "round trip". East Canal has been dived to a depth of 24 metres (79 ft) in drought (but water levels are normally much higher). The connection to Oxlow Cavern is a "serious undertaking" and many cavers have underestimated the difficulty of the passage. Access is permissive, on payment of a fee at a parking area near Peakshill Farm. The cave is within the Castleton SSSI. Since 2002, the Derbyshire Cave Rescue Organisation has attended 21 callouts to Giant's Hole, one of which resulted in a fatality.