Where there are cliffs there are caves drilled into the softer layers of the Caithness flagstones. Often only accessible by sea these secret chambers fire the imagination as hiding places. A particular feature associated with sea caves is the gloup. This is a hole in the land surface above the cave where the roof has collapsed inwards. In The Glorious Twelfth, I called this feature the sea hole. The hero, Ben Harris, falls down it in the dark and lands in the water below. The example shown, ringed by primroses, lies near Sarclet in Caithness. The cave shown on the left is the nearest to the Sinclair mausoleum at Ulbster and is large enough for a small boat to enter.
The Glorious Twelfth by Alan Calder published by Museitup
Also by Alan Calder, The Stuart Agenda published by Willowmoon www.amazon.co.uk/dp/B005BJ3GNI