Cairnduff

Cairnduff - Credit: Wikimedia Commons

Cairnduff, Cairn Duff or Carn Duff is a roughly circular Bronze Age burial cairn, located on the lands of High Peacockbank Farm near the town of Stewarton in East Ayrshire, Scotland. It was built around 3000 years ago. Read more on Wikipedia

type: military installation
date from: Unknown

Source: en.wikipedia.org