Worm Gill is one such watercourse, running south westward from Caw Fell, and forcing the ridge to detour northwards around the head of its valley.

Crag Fell and Grike complete the westward line of the ridge, whilst Lank Rigg itself stands to the south across the head of the River Calder.

Lank Rigg occupies an upland area about 2 miles (3 km) square, bordered by the River Calder and Worm Gill to east and west.

Worm Gill sweeps around the southern flank of the fell, joining the Calder at Thornholme to complete the moat on three sides.

[2] Lank Rigg carries the remains of ancient settlement with a tumulus near the summit and various enclosures and cairns near Tongue Bank.

[1] To mark the completion of his Pictorial Guide to the Lakeland Fells, Alfred Wainwright buried a two-shilling (now ten pence) piece under a stone at the summit.

A footpath leads off eastward between Blakeley Raise and Burn Edge, dropping into the upper Calder valley.