Ancient Quarries | Wallpaper

This wallpaper shows Alibates Flint Quarries National Monument in Texas. The monument protects a mesa covered in a lithic scatter carpet of flint, so thick you cannot walk without stepping on human generated flakes of Alibates flint.



via LiveScience.com http://www.livescience.com/39282-alibates-flint-quarries-national-monument-wallpaper.html