 Entrance to Unstan Chambered Cairn | |
  Shown within Orkney Islands | |
| Location | Mainland, Orkney, Scotland |
|---|---|
| Coordinates | 58°59′12″N 03°14′58″W / 58.98667°N 3.24944°W |
| Type | Neolithic chambered cairn |
| History | |
| Periods | Neolithic |
| Site notes | |
| Public access | Yes |
| Reference no. | SM90232 |
Unstan (or Onstan, or Onston) is a Neolithic chambered cairn located about 2 mi (3 km) north-east of Stromness on Mainland, Orkney, Scotland. The tomb was built on a promontory that extends into the Loch of Stenness near the settlement of Howe.[1] Unstan is notable as an atypical hybrid of the two main types of chambered cairn found in Orkney, and as the location of the first discovery of a type of pottery that now bears the name of the tomb. The site is in the care of Historic Environment Scotland as a scheduled monument.[2]