I found out about it many years ago while watching ancient alients. From what i understand it used to be a very sacred and spritual practice where a native shammon used to guide you to connect to the other side or different realm to get spritual guidence. Now i have heard it has turned into a resort like business to come get some out of the world experience and now u can buy it in a can . Be careful tho i have heard it can be dangerous and can cause death.