Mushrooms have a long, ancient history of use amongst traditional hunter-gatherer cultures with a deeply shamanic worldview.
Mushrooms have been used for medicine, food and for shamanic use in order to establish contact with the spirit realm of the Underworld. We know that people during the Neolithic period people ate fungi and mushrooms as part of their diet.
The mushrooms, so they say, offers them insight into the visionary world of spirits, ancestors and the Underworld. Shamans often report seeing nature-spirits and mushroom-people. Mushrooms do the work of the Underworld. They recycle, they transform and absorb.