The lantern of this ligthouse has been removed; the light is displayed from a short mast atop the capped tower. The entrance to the River Liffey is constrained between the South Wall and the North Bull Wall, but the northern wall is designed so that the section leading to the lighthouse is only exposed at low water; the effect of this is that scouring by the ebb tide tends to keep the channel open. Located at the end of the North Bull Wall, opposite Poolbeg Light.

ARLHS Number: IRE-054
Admiralty Number: A5884
NGA Number: 6628
Build: 1880
Construction: stone
Height: 15 m