On the west side these extend from Blacklow Hill to Axe Edge; on the east, from Derwent Edge to near Derby; outlying masses form the rough moorland on Kinder Scout and the picturesque tors near Stanton-by-Youlgreave.
A series of black shales with nodular limestones, the Pendleside series, rests upon the Mountain Limestone on the east, south and north-west; much of the upper course of the Derwent has been cut through these soft beds.
Between this and the Derwent valley the principal height is Grasmoor (2791 ft.); southward a steep narrow ridge (High Style, 2643) divides it from Ennerdale, containing Ennerdale Water (148 ft.
On this shore Morecambe Bay receives the Wampool and Waver from the plain, the Ellen has its mouth at Maryport, and the Derwent from the Lake District at Workington.
The earliest English settlements in the district which is now Derbyshire were those of the West Angles, who in the course of their northern conquests in the 6th century pushed their way up the valleys of the Derwent and the Dove, where they became known as the Pecsaetan.
Borrowdale is joined on the east by the bare wild dale of Langstrath, and the Greta joins the Derwent immediately below Derwentwater; the town of Keswick lying near the junction.
The scenery of the neighbourhood, in both the Wye and the Derwent valleys, is very beautiful; the village of Eyam (pronounced Eem) near the Derwent may be noticed as specially picturesque.
Thus at Woodhead, lying high in the extreme north, it is 52.03 in., at Buxton 49.33 in., at Matlock, in the middle part of the Derwent valley, 35.2 in., and at Derby 24.35 in.
The town is celebrated for its invigorating climate, and its annual regatta on the Derwent attracts numerous visitors.
The central and southern districts are drained by the Derwent from Lake St Clair - its tributaries being the Nive, Dee, Clyde, Ouse and Jordan.