grass after an initial rough descent. Geology The summit area is composed of the dacitic, welded lapilli tuff of the Lincomb Tarns Formation. Andesitic lapilli tuff occurs on either end of the ridge, together with small intrusions of basalt and dolerite. Underlying this is the Birker Fell Formation of plagioclase-phyric andesite lavas. Summit The summit cairn is sited on a small rock outcrop, close to the beginning of the ridge-end descent to the south. The view across Wastwater to the screes of Whin Rigg and Illgill Head is excellent. Also in view is the head of Wasdale and the more distant Coniston Fells. Black Combe appears far off to the south west. Ascents The simplest ascent is via a path up the nose of the ridge, beginning at Greendale. A longer alternative climbs the beck to Greendale Tarn before doubling back to the summit along the Seatallan ridge. A circular tour can be contrived via Seatallan and Buckbarrow. References Fells of the Lake District Borough of Copeland