Thick viscous pitchstone lava of rhyodacitic composition[2] flowed out, filling a river valley.

The peak is most frequently climbed from the ferry terminal at Galmisdale on the southeast corner of Eigg.

A rough track heads west, passing between the northern side of An Sgùrr and the shoreline.

The route now almost doubles back on itself, heading east to reach the summit, which is crowned by a trig point.

The climb, from ferry terminal to the Nose of An Sgùrr and back, takes at least four hours.