Barnton Quarry
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Barnton Quarry is a ROTOR bunker of designation R4 in Clermiston, Edinburgh. It was built in 1952 as the SOC (Sector Operations Centre) for correlating information from ROTOR radar stations throughout Scotland. The bunker comprises three underground levels and a large surface building which pre-dates the underground structure.
The site was re-designated as a RSG (Regional Seat of Government) in the early 1960s and remained operational until the early 1980s when ownership was transferred to Lothian Regional Council. The Council sold the site in the late 1980s to a private property developer.
The underground structure was destroyed by fire in the early 1990s.