The Knap of Howar (/ˌnæp ˌɒv ˈhaʊər/) on the island of Papa Westray in Orkney, Scotland is a Neolithic farmstead which may be the oldest preserved stone house in northern Europe.[1] Radiocarbon dating shows that it was occupied from 3700 BC to 2800 BC, earlier than the similar houses in the settlement at Skara Brae on the Orkney Mainland.[2]