The ditch and banks of Wandlebury Iron Age hill fort
Wandlebury Hill fort is quite an impressive size and forms part of Wandlebury Country Park just south of Cambridge in the Gog Magog Hills. It's difficult to see the hill fort as a whole as it's mostly tree covered with beeches and yews, but the earthworks are still quite well defined and you can do a complete and pleasant walk around them, about a mile in length. In the centre of the earthworks once stood Wandlebury House, home of, amongst others, Francis Godolphin, but now only a huge stable block remains.
The old stable block of Wandlebury House (no longer there) which is situated in the centre of the hill fort.