A Megalithic Lunar Observatory in Orkney: The Ring of Brogar and its Cairns

  title={A Megalithic Lunar Observatory in Orkney: The Ring of Brogar and its Cairns},
  author={Archibald Stevenson Thom and Alexander Strang Thom},
  journal={Journal for the History of Astronomy},
  pages={111 - 123}
  • A. Thom, A. Thom
  • Published 1 June 1973
  • Physics
  • Journal for the History of Astronomy
The Ring The Orkney Islands are rich in archaeological sites of many kinds and periods, but perhaps the most impressive is the Ring of Brogar (see Figure 2). It stands in a commanding position on the peninsula that separates Loch of Harray from Loch of Stenness on the Mainland of Orkney, so that the stones forming the circle can be seen from far and near. The stones consist of flat slabs up to 15 ft high placed along the circumference of a true circle. As the average thickness of the slabs is… 

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