 The needle is part of Oak Howe Crag, a popular climbing location on the fell, with over ten routes on Rhyolite crags.The summit area is formed from a large sill of andesite, overlying the dacitic lapilli-tuff of the Lingmoor Fell Formation.Lingmoor Fell's north-eastern slopes above the villages of Elterwater and Chapel Stile have long been quarried for its high-quality Westmorland green slate.