Unstan is a Neolithic chambered cairn on Mainland, Orkney, Scotland, built 3400-2800 BC on a promontory extending into the Loch of Stenness near Howe, about 2 mi (3 km) north-east of Stromness [1]. It is notable as an atypical hybrid of the two main types of chambered cairn found in Orkney [1]. The site is also famous as the location where Unstan ware pottery was first discovered, now named after the tomb [1]. The site is in the care of Historic Environment Scotland as a scheduled monument [1].
Unstan Chambered Cairn

Also known as: Cairn de cámaras de Unstan, Cairn de cambres d'Unstan, Knowe of Onston,or Unstan,chambered cairn, Onstan Cairn, Unstan Cairn, Анстен, Анстен (каїрн)
| Type | Cairn |
|---|---|
| Period | 4500 - 3000 BC |
| Country | Scotland |
| Coordinates | 58.9868° N, 3.2494° W |
Scotland