The Hills of Galena by Night

These interesting images were taken while scanning a common piece of galena with a scanning electron microscope.
Of course, the moon was added for effect.

Galena at 50X taken by Jeff Thomas, November 1997, with a JEOL SEM
Galena at 150X taken by Jeff Thomas, November 1997, with a JEOL SEM
Galena at 1000X taken by Jeff Thomas, November 1997, with a JEOL SEM
Galena at 10,0000 looking down a slope taken by Jeff Thomas, November 1997, with a JEOL SEM