It's like being an archeologist, stumbling across the remnants of a previously unknown weird cult. The mind reels imagining their culture and rituals. Whatever became of them? Were they the victims of disease, eradicated by a neighboring tribe, did they succumb to the temptations of high-quality quality kit cars with parts that actually fit and they moved on? Or more likely, were they visiting aliens who returned to their home planet when their mission here was complete. Yeah, that I could believe.