Pair of stone-built beacon towers or naivigational markers on 'Toucan' Rock (name derived from County Series mapping). The southern tower is narrow, c.1.1m high. The north tower is cone-shaped, c.1.3m high. The towers are reached by rock-cut steps and remains of a stone-built path across an isthmus between two inlets, from the south-west.

Visited by T. Driver, RCAHMW, 19 April 2016.