Middleton Dale is a steep-sided, carboniferous limestone valley in the Derbyshire Peak District of England.

[1] The northern side of the valley has an extensive system of caves and sink holes (swallets), although most are narrow and muddy.

Ivy Green Cave is 225 metres (738 ft) long and in 1989 a local boy from Eyam got lost in it and his body was only found a year later.

The fossil-rich limestone was formed from deposits in a warm shallow sea in the Brigantian stage of the Carboniferous period (around 330 million years ago).

[5] Middleton Dale has extensive rock climbing, with over 450 graded routes across a series of large buttresses up to 50 metres (160 ft) high.

Ancient woodland of ash trees, wych elm and hazel grows on the lower valley slopes.