Houses 4 and 5 on the Bay of Skaill, Skara Brae, Scotland
Houses 4 and 5 on the Bay of Skaill House 5 (center left) and House 4 (center right) with the Bay of Skaill. Neolithic village of Skara Brae, c. 3000-2500 BCE. Mainland, Orkney Islands, Scotland.