Dyrhólahey ("Doorway hill island") is a cape or headland 110-120 m high, with perpendicular cliffs on the southern and western sides and a narrow rock rim with an arch-shaped opening through it protruding into the sea.
Boats and even small airplanes can pass through the arch, hence the name Dyrhólaey, or Portland as it has been called. Dyrhólahöfn west of Dyrhólaey used to be a point place for fishermen.
Cliffs and pillars off the coast, one of them, Háidrangur (56 m), climbed by Hjalti Jónsson in 1893.
Dyrhólaey is a nature sanctuary. It is possible to go by boat to the cape.