Located in Groton, Connecticut, Gungywamp is a site consisting of stone chambers, rings of stones, piles of rock ... The other two petroglyphs include an upper-case R and a lower-case R, while ...

one of the longest stone rows on Dartmoor. Piles Hill consists of two parallel lines of large stones that curve for 2,788 (850m) across a wide ridge. The paved surface was discovered by chance ...