A multidimensional trip into psychedelic consciousness, science and culture, covering topics ranging from Neolithic worldviews, prehistoric rituals and Amerindian epistemology to weaponised hallucinogens, religious freedoms, trip-lit and the death of the '60s dream. This collection of 22 original essays transects a wide range of disciplines to offer empirical, mystical, imaginal, hermeneutic, queer, phenomenological and parapsychological perspectives on the exploration of psychedelics, taking in scientific debates on MDMA, manifestos and policy challenges.