I was wondering about this! If you have people back during that time what could they be doing with this alignment of the planets and their archetecture? They believed that putting a building in a specific place was a thing of harmony with the planet, themselves, and outer space. If they believed something about the alignment of planets, and a belief of a spiritual revelation, than is it possible that they have buried something that would be exposed during the alignment with the planet? possibly a location to something buried. also if this is true could it be found using a map of the surroundings and a simulation of the planets alignment? since they were after all able to do this and come up with a location?:shrug: If so what could they have buried, a special person, some hidden treasure to the opening of a possible portal they believed would open> curious!