This is the Northeastern Corner of the British Isles at Duncansby Head, and this is Geo of Sclaites, a vast crevice in the cliffs which are around 64 meters high and provide nest sites for many birds, Including, Puffins, Guillemots, Razorbills, kittiwakes, Fulmars and many Gulls.
The water is the Pentland Firth.

A large view may be beneficial

The folk on the cliff top are possibly a little careless, so another tenuous link from Man Overboard,
www.youtube.com/watch?v=E6GIKA3hYlo

HFF and a good weekend.