There is also a route from Clapham that follows the Ingleborough Estate nature trail, before passing the Craven Fault, the showcave of Ingleborough Cave, the ravine of Trow Gill and the pothole of Gaping Gill. It then crosses a marshy area and climbs up to the shoulder of Little Ingleborough before following the ridge to the summit. The return to Clapham can be varied by taking the Horton-in-Ribblesdale path for before striking south through more limestone pavement to the small top of Norber; a descent past the famed Norber erratics (Norber Boulders) finishes a walk of that Wainwright considered the finest walk in the Yorkshire Dales.