This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Buckland Rings by Thomas Wright . Buckland Rings by Thomas Wright in notice entitled Letter from Mr Tho Wright to James Theobald Esq concerning Two ancient Camps in Hampshire Philosophical Transactions of the Royal Society Volume Philosophical Transactions of the Royal Society Volume Thomas Wright PDold Buckland Rings