This is the Fred Flintstone part. The Wind Caves are passed on the left as you exit Split Mountain Gorge and continue up Fish Creek Wash. If you've got the time and energy after driving through Sandstone Canyon, it's worth the side trip to hike to the Wind Caves. The trail takes you up a hill that's steep in a couple of places and about a mile each way. Although they're called the Wind Caves, the differential erosion that carved the caves came primarily from water, not wind.