Core Shamanism

Core Shamanism consists of the universal, near-universal, and common features of shamanism, together with journeys to other worlds, a distinguishing feature of shamanism. As originated, researched, and developed by Michael Harner, the principles of Core Shamanism are not bound to any specific cultural group or perspective. Since the West overwhelmingly lost its shamanic knowledge centuries ago due to religious oppression, Core Shamanism is particularly intended for Westerners to reacquire access to their rightful spiritual and human heritage through

Core shamanism emphasizes the reality of spirits and the ability to access non-ordinary reality through altered states of consciousness, primarily using techniques like shamanic journeying and drumming, without reliance on drugs or specific cultural rituals. 

source: Foundation for Shamanic Studies’ website