Two men who stole Native American rock carvings from a Nevada mountainside
Well as it say, they took them from a mountainside - without putting a value on them - what makes then different from a normal rock on the mountainside?
I you or me took a stone from a mountain - would we expect to be prosicuted for stealing?? probably not!

They need to put a value on it to differenciate between the carvings and anything else that can be found on a mountain!