Crook Hill is regarded as an outlier of Kinder Scout although the two are separated by the long western arm of Ladybower Reservoir.

The hill has twin summits, the highest of which reaches a modest height of 382 metres (1,253 ft) while the secondary top (sometimes referred to as Ladycrook Hill, although this name does not appear on Ordnance Survey maps)[citation needed] attains an altitude of 374 metres (1,227 ft).

Geologically, the hill consists of Kinder Scout Grit, a kind of sandstone.

[4][5] Crook Hill is normally climbed from the Derwent valley road just as it leaves the A57: a bridleway leaves the small car park at grid reference SK190871 and climbs steeply and muddily up to Crookhill Farm, a working sheep farm owned by the National Trust which also offers accommodation to tourists.

Once the farm is passed, a stile is climbed onto the open sheep pasture and it is then a straightforward walk to the two twin summits, which are on designated access land.