RAF Harrowbeer was located approximately NNE of the city of Plymouth and approximately south of Tavistock, and also sits within the boundary of Dartmoor National Park. Roborough Rock is a tor-like igneous rock outcrop immediately south-west of the airfield (officially called 'Udal Tor') on Roborough Down, next to the border with the A386. This location created problems for the airfield during the Second World War, mainly due to bad weather. The Rock seems to have had little impact on the use of the Airfield, the only thing that was done by the RAF was the placing of a warning light on the top. There seems to be no truth in the widely-held belief that the RAF attempted to blow it up.