I had some time to kill between the Orkney Ferry, and my train home from Aberdeen, so I popped out for a pedal around the town.
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This old fort/gun emplacement is on the clifftop overlooking the entrance to the harbour.
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The BM is on the corner by my rear wheel.
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Part of the traversing rail for the gun.
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Pleased to spot the BM.
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Not sure what the standing stone at the top is for, but there it is!
Much better fun, and more productive, than 6 hours sitting in a railway station, I reckon..