Neolithic Flint Mines

Belgium / Hennegau / Mons / Rue du Point du Jour
 mine, neolithic age, UNESCO World Heritage Site
The Neolithic flint mines at Spiennes, covering more than 100 ha, are the largest and earliest concentration of ancient mines in Europe. They are also remarkable for the diversity of technological solutions used for extraction and for the fact that they are directly linked to a settlement of the same period.
Wikipedia article: http://en.wikipedia.org/wiki/Spiennes
Nearby cities:
Coordinates:   50°25'10"N   3°58'57"E