Brough of Birsay

[Photo: Ken Trethewey (2016)]

The lighthouse (on the hill behind the camera) is approached by crossing a tidal bridge from the north-west tip of Mainland, Orkney. [Photo: Ken Trethewey (2016)]

A wide format photo to show the location of the lighthouse on the cliff top. [Photo: Ken Trethewey (2016)]

Close-up of the lantern showing the optic. [Photo: Ken Trethewey (2016)]

The crossing to the island on which the lighthouse is situated features some unusual geological formations. [Photo: Ken Trethewey (2016)]