'Cavemen chipped this dark quartz rock into sharp tools & weapons; thousands of years later, it was used in firearms'
flint
LATER: Cavemen chipped this dark quartz rock into sharp tools & weapons; thousands of years later, it was used in firearms
Cavemen chipped this dark quartz rock into sharp tools & weapons; thousands of years later, it was used in firearms
Cavemen chipped this dark quartz rock into sharp tools & weapons; thousands of years later, it was used in firearms
LATER
flint
LATER