The sound was a supply route and also the safest anchorage in the Isles of Scilly. Cromwell built this castle in 1651 and the royalists surrendered shortly after. Shipman Head. Bryher is to the left, this is only one of the cannon in position
Uploaded to Geograph by Martin Dawes on 18 July 2017
Photo © Martin Dawes, 18 July 2017. Licensed for reuse under this Creative Commons licence