The Northern Lighthouse Board (NLB) is the general lighthouse authority for Scotland and the Isle of Man. It is a non-departmental public body responsible for marine navigation aids around coastal areas.
The Board's headquarters in George Street, Edinburgh. The nameplate on the door gives the traditional name of 'Commissioners of Northern Lights'.
Commissioners' Flag, flown outside the NLB HQ in Edinburgh
North Ronaldsay is the northernmost island in the Orkney archipelago of Scotland. With an area of 690 hectares (2.7 sq mi), it is the fourteenth-largest. It is mentioned in the Orkneyinga saga; in modern times it is known for its historic lighthouse, migratory bird life and unusual breed of sheep.
A view of the house and loch at Garso on North Ronaldsay, with the lighthouse in the distance
Blaeu's Atlas of Scotland, published 1654
The unique local sheep, which eat seaweed