It was built 400 metres in front of the defensive line, in an exposed position on a natural limestone outcrop, and is therefore designed for all round defence, with each of its seven sides having massive ramparts and being surrounded by a deep ditch.
It was built 400 metres in front of the defensive line, now incorporated in to the east-west Crownhill Road, in an exposed position on a natural limestone outcrop. Crownhill Fort is designed for all round defence, with each of its seven sides having massive ramparts and being surrounded by a deep ditch.