A hallucinigenic compound found in various strains of magic mushrooms (native to many countries in England). Very potent, producing an intense trip. Typically, the trip lasts around 4-6 hours. It is a psychedelic trip with many colors and shape shifting, ect. Often one will have a rather philosophic come down (the stage of the trip where the effects are wearing off).
Mexican Psilocybe Cubensis
The active chemical in magic mushrooms that produces hallucinations.
Magic mushrooms contain ample psilocybin.