Hasselwood Rock
Hasselwood Rock is a uninhabitable skerry 200 metres North of Rockall in the North-east Atlantic Ocean.
Location and characteristics
Hasselwood Rock is some north of the larger outcrop of Rockall. Expeditions and landings on Hasselwood Rock have not been reported.The rock is approximately above low water, and in diameter, with an area of approximately. It is covered at high tide and in heavy seas, often only visible as breaking waves. The only other rocks in the area—those of Helen's Reef—are almost to the north-east.
The upper part of Hasselwood Rock is the destroyed cone of an extinct volcano. The geological composition is unknown.