The southern flanks fall gently over acres of sheep pasture in the manner of the Skiddaw range. At the base of the slope is the wooded valley of Whit Beck, separating Lonscale Fell from the east ridge of Latrigg. Here also is Lonscale, the farm which has given its name to the fell. Whit Beck is a tributary of the Glenderaterra, a stream which forms the eastern boundary of Lonscale Fell. This flows due south from Skiddaw Forest between the Skiddaw massif and Blencathra, before joining the River Greta and running on through Keswick. The eastern face of the fell above the Glenderaterra is a mile long scarp of crags, a singular feature in the Skiddaw range.