Midhowe Cairn on the island of Rousay. The image shows an extensive rectangular cairn seen from one end with a passage running through it from lower left to upper middle of the frame. Above the cairn is a metal structure supporting a curved roof with large skylights. This is supported on stone walls that can be seen either side of the cairn.

Inside the vast and impressive Midhowe Cairn on the island of Rousay in Orkney. 23m long internally and 32.5m long externally and with 12 compartments or stalls, it is thought to have been built in around 3500BC. More pics and info: www.undiscoveredscot...

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