The summit is crowned by an Ancient British Iron Age
or late Bronze Age hill fort. It is this which the hill is named
after - Caer Caradog in Welsh meaning Caradog's fort. Local
legend has it that this was the site of the last stand of Caractacus
against the Roman legions during the Roman conquest of
Britain, and that after the battle he hid in the cave near its
summit. Others say his last stand was in the locality
but that this was one of his fortresses.