Could those possibly be 3 round barrows, at least? They are standing on a prominent hill, 2 clearly planted over with trees whilst the 3rd stands exposed. A rough track runs along where the tree line drops, which runs around the 1st potential barrow. To be explored! It stands in a very prominent place, further along but out of shot at the end of the ridgeline stands an outcrop of rock visible from a great distance, with an almost 180 degree view of the surrounding area. A great strategic spot for a settlement/religious site, my punt is Neolithic. Pah to Roman! A stream, now dry, would’ve run down from there too, signalling to me a natural spring and water source for any activity up t’hill. And amazing place from just a distance, I can’t wait to explore more