Do you think religions were given to cave dwellers on earth by aliens from far off skies?

well, ancient humans either had very active imaginations to produce the elaborate drawings depicting unearthly beings/creatures that have been discovered in caves all around the world, or they were simply communicating things they saw and experienced as best they could. whether these discoveries have anything to do with the origin and establishment of religion, i don't know. religion has historically been used as a tool to instil fear in the common people and prevent them from retaliating against powerful oppressors throughout time. did aliens originally come up with that concept? i dunno.