What are Grimes Graves?
Grimes Graves is the name given to the area of ancient flint mines found near Thetford, Norfolk, England. Covering an area of over 90 acres, the land is pot-marked, rather like a lunar landscape, with grassy mounds and craters. These craters are the remains of 433 in-filled shafts, pits and spoil heaps from diggings made 5000 [more...]