Grime's Graves is a large Neolithic flint mining complex in Norfolk, England. It lies 8 km north east from Brandon, Suffolk in the East of England. It was worked between c. 2600 and c. 2300 BCE, although production may have continued through the Bronze and Iron Ages and later, owing to the low cost of flint compared with metals. Flint was much in demand for making polished stone axes in the Neolithic period. Much later, when flint had been replaced by metal tools, flint nodules were in demand for other uses, such as for building and as strikers for muskets.
Grime's Graves was first extensively explored by the 19th-century archaeologist William Greenwell.
Wikipedia https://en.wikipedia.org/wiki/Grime's_Graves
Official Website https://www.english-heritage.org.uk/visit/places/grimes-graves-prehistoric-flint-mine/
Address (Unnamed Road), IP26 5, United Kingdom
Coordinates 52°28'36.299" N 0°40'24.369" E