General Carrera Lake, shared by Argentina and Chile, is the deepest lake in South America. Its waters are beautiful, "a glittering combination of emerald, turquoise, aquamarine and azure. . . . Along its banks, directly below the Andes, sheer marble cliffs present themselves to further astound the visitor. Over the millennia they have been weathered and folded to create a stunning cathedral of marble."
This is Carloway Broch, on the Island of Lewis in Scotland looking something like a broken tooth on the jaw of the island. It's a fortified home built during the Iron Age some 2,100 years ago. Much of the stone from the broch will have been used by locals over the centuries to build their cottages. Brochs, unique to Scotland, are dry-stone, twin-walled, round towers up to 30m across and 15m high. In 2004 a broch was built by the West of Scotland Dry Walling Association www.wsdswa.org.uk