Lying 2.5 kilometres (1+1⁄4 nautical miles) off Village Bay on Hirta, it is part of the rim of an extinct volcano that includes Dùn, Ruaival and Mullach Sgar.

Its north cliff appears to have the profile of a human face, visible when travelling to St Kilda from the east.

The skerry of Na Bodhan lies to the north east.

The stack was climbed recreationally in the early 1900s; Norman Heathcote mentions a moderately difficult ascent in 1900, as part of a climbing expedition that also included an ascent of Stac Lee.

This article about a location in the Western Isles is a stub.