The authorities of Yavapai County had been looking into by a series of disappearances, going all the way back to 1965, when the leader of an archaeological team, Jack Mattingly, vanished without a trace from the excavation site.
His disappearance was followed by several others, seven people in total, all males in their fifties, sharing an academic background.
The police investigation into the missing persons cases has been frustrated by a series of natural phenomena, possibly related to an anomaly in the local magnetic field which rendered electronic equipment and even old-fashioned compasses useless.
The investigating team ventured as far as they felt it was safe into the undeveloped terrain, but had to turn back eventually when they couldn’t get a clear satellite view of the area due to unusual atmospheric activity.