Share
twitterlinkedinfacebook
Image 1 of 1
UT-ThreeFingersCanyon-Petroglyph3.tif
Petroglyphs at the entrance to Three Fingers Canyon, in Utah's San Rafael Reef.<br />
<br />
Petroglyphs (also called rock engravings) are images created by removing part of a rock surface by incising, pecking, carving, and abrading.