 The two fells form a ridge 2 miles long with the lower Fellbarrow at the northern end.Alfred Wainwright in his influential "Pictorial Guide to the Lakeland Fells" was forced to estimate the elevation of Low Fell and considered (although with some doubts) Fellbarrow to be the high point of the ridge.There are a number of intervening tops, in particular Smithy Fell and Sourfoot Fell, which Wainwright decided were satellites of Low Fell, based on the position of the lowest col. That convention is followed here.