Alienígenas do Passado Temporada 3 Episódio 5

Throughout the world, ancient rites and rituals are believed to connect humans to another dimension. But just who--or what--are we communicating with? Could todays rituals, such as festivals, coronations and funerals, be based on early mans attempts to emulate ancient alien visitors? If so, what other ancient rituals might find their roots in a kingdom--not of this world?