The Devonian conglomerate at Sarclet, south of Wick. Erratics of this distinctive rock can be traced across the county to Dunnet Head
Key geomorphological sites
Context: Caithness has many sites where landscape histories can be examined. Some are of national or international significance and have been designated as Sites of Special Scientific Interest. Others represent clear and accessible examples of classic rocks, structures and landforms. Many fascinating sites have yet to be listed.