Not Peralta,
Sorry about what I said about your story going cold. Guess I was just frustrated after being run off and seeing those helicopters.
Some friends and I left early this morning for Spirit Mountain and followed the directions from this site. We went up Grapevine Canyon, saw the heart, found the petroglyphs (including the one with the map). We drove down the road and saw the knife rock, it's way more impressive in person! Just up the road, just like you said, we could see the three from your picture as well as the priest rock. It's hard to get the real idea what they look like in a small photograph. At least we didn't see any strange men this time, but then we stayed mostly on the main trails.
I've hiked in the Superstition Mountains in the past and have never seen as many things that look like the Stone Tablets as I saw today in such a small area. It was fun and we were done before it got too hot. We've hiked around here before but never really noticed the things you pointed out on this site. It's impressive in person. I'd recommend that people should come look, even Cactusjumper. I plan on spending more time hiking around Spirit Mountain, this fall when we can spend the day. There's no telling what else I might see. Too bad there's no camping.