ANZA-BORREGO, Calif.—Driving along a desolate highway you’re being fooled by a mirage when you see two raptors locked in battle, or a monstrous eagle poised for take-off into the blazing sky. But as you slow down to get a better look, you realize this is no mirage: there really are giant creatures dwelling in the sand next to the road. About 90 winding miles east of San Diego in this desert valley, prehistoric creatures and humans sculpted in scrap metal and iron cohabit in the Anza-Borrego Desert. Almost 100 beasts and desert dwellers stand realistically frozen in time, butting heads, snarling, or searching for their next meal in the scorching desert. “I can see these creatures living here a long time ago,” said Jackie Steinkrauss, an Escondido, California resident on a recent visit here.