promontory forts can be found all along the coast of penwith. maen castle, near to land's end is one of the oldest, having been dated to around 500 bc. they are also found in other districts, e.g. the rumps near padstow and dodman point on the southern cornish coast as well as rame head close to plymouth. in devon, burgh island and bolt tail are located on the south coast and embury beacon and hillsborough on the north coast.