Drystane dyke

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Seiventeent century drystane dyke at Muchalls Castle, Scotland
Inca waw o drystane biggin in Cusco, Peru

A drystane dyke or dry dyke is a waw that is biggit frae stanes athoot ony lime tae bind thaim thegither. As wi ither dry stane structures, the dyke is hauden up by the interlockin o the stanes. Sic waws are uised in biggin construction, as field boonds, an on stey braes as retainin waws for terracin.