Mam Tor

Mam Tor is a 517 m (1696 ft) high peak near Castleton in the High Peak of Derbyshire, England. Its name literally translates as Heights of the Mother and it is also known as the Shivering Mountain on account of the instability of its lower shale layers. Indeed, the A625 road now comes to a dramatic stop at the walls of the hillside, as a consequence of a landslide. The summit is encircled by the earthworks of an Iron Age hillfort, part of which has been lost to the landslide.

At the base of the Tor are the Blue John Cavern and Treak Cliff Cavern where lead, Blue John and other minerals were once mined.

To the west of the Tor lies Rushup Edge; to the east along the ridge lie Back Tor and Lose Hill. Back Tor has a steep shale face, occasionally climbable when hard-frozen.