The little chipped rocks are evidence that other people were here a long time ago – making stone tools. These “chippings” are officially called “lithic scatter”. “Lithic” means “rock” (the outer surface of the earth is the lithosphere). The little pieces of rock could also be called “leaverites – leaver her right were you found her”. It’s illegal and unethical to take artifacts from public land, so what I do is add them to my archaeological photo collection and leave them where I find them.