Earth-Castles Devon is dotted with hill-forts of many periods, constructed against invaders from east or west, or from the sea. Their exact purpose is being investigated, and indeed they are still being counted. Quite a lot have legends attached to them. Bradley, near Newton Abbot, has men in armour lying there on moonlight nights.
p 147 in
The Folklore of Devon
Folklore, Vol. 75, No. 3. (Autumn, 1964), pp. 145-160.