Neolithic Flint Mines at Spiennes | Belgium

Postcard
The Neolithic flint mines at Spiennes, Belgium, covering more than 100 ha, are the largest and earliest concentration of ancient mines in Europe. Mining in Spiennes started some
6,000 years ago.

Flint was used in the manufacture of tools during the Stone Age as it splits into thin, sharp splinters called flakes.

Stamps
In 2016, Belgium issued a set of 5 stamps to celebrate "Supermoon". A supermoon is the coincidence of a full moon being at te closest distance to earth.