Fourmilab Switzerland
John Walker: Named Lunar Formations
This atlas of the Lunar surface features lists all named features. Click on a name and see an image of that item, or at least an image of the Moon centered on that item.
Curated OER
Unesco: Belgium: Neolithic Flint Mines at Spiennes (Mons)
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...