Learn more about how certain psychoactive substances are ritually used, shaping cultures across the world. http://on.natgeo.com/2rKQjL9 pic.twitter.com/TSm6lIDixJ

Learn more about how certain psychoactive substances are ritually used, shaping cultures across the world. http://on.natgeo.com/2rKQjL9  http://pic.twitter.com/TSm6lIDixJ

https://twitter.com/NatGeoTravel/status/873359173442048001