Castle Dore is an Iron Age hill fort near Fowey in Cornwall, United Kingdom located at grid reference SX103548. It was probably occupied from the 5th or 4th centuries BC until the 1st century BC. It consists of two ditches surrounding a circular area 79 metres in diameter. Excavated in the 1930s, it was one of the most intensively investigated Iron Age hillforts in Cornwall.
The perimeter of Castle Dore consists of two ditches . The inner ditch is circular, measuring 79 metres in diameter internally, and the outer ditch arced round it from the north to the south-east before widening in the north east to form an entrance. The ramparts were raised later in the fort's history – from 1.8 to 2.5 metres – the layout remained mostly the same aside from the entrance which was made more complex.
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