Black Elk on Vision Quests
"A Vision Quest is an experience of deeper understanding of Nature and Spirit. It is a ceremony practiced by American Indians. To prepare for this "insight" one must first cleanse the body and mind by going through a Inipi or sweat lodge. Then with the help of a Holy Man is told certain things and must go to a spot, usually on a holy mountain, and stay 2 or 3 days During this time no food is eaten and one does not sleep but spends the time in deep prayer and observation. Many times, but not always, there is a vision. This vision is then shared with the Holy Man to help learn of its meaning. Sometimes the meaning is not shown for several years afterward. "
From Black Elk.