Grime's Graves
Local highlightNeolithic flint mines you can climb down into.
Open to visitorsan English Heritage site — check opening times and admission before you go
Earthworks onlybanks, ditches and platforms — read the ground, not walls
Grime’s Graves is a field of grassy hollows on the Breckland heath, each one a Neolithic flint mine dug around 2650 BC. English Heritage runs it, and it’s the only such mine in Britain you can enter — a ladder drops nine metres into one shaft to the black flint seam the miners were working. Paid entry; Thetford Forest surrounds the site, and Brandon station is about 4km to the south-west.
More at the National Heritage List entry
