I just finished watching the season finale. The entire show is scripted and staged. I have hiked, backpacked and canyoneered the Superstition Mountains for more than 20 years and know that area very well. I'm out there 20 or 30 times a year. There are no Indians, no ghosts, and nobody is following people looking for the gold. The producers are trying to create the drama to get people to watch and it works. There are definitely Indian artifacts, petroglyphs and ruins throughout the Superstitions. It's not unusual to see them.
In the finale, the canyon they were in is called Crucifix Canyon, which empties into Canyon Lake (Salt River is dammed up). I've been down Crucifix a number of times. It's named after the natural crucifix high upon Black Cross Butte. I've also been in Hose Canyon which is a technical canyon requiring 3 rappels to get through, and it empties into Crucifix Canyon. People have been up in the bat cave although I have not. I don't know if there is a cross in there but I would doubt it.
I know that they hype the show up with as much drama as they can, but these 5 treasure hunters are idiots who have never spent a day hiking in the Supes. Nobody goes out wearing and carrying all of that gear. Desert hiking is completely different than anything else and it requires the right gear and know-how. These bozos don't have a clue.