The pre-contact spiritual beliefs of the Ohlone were not recorded in detail by missionaries. The Ohlone probably practiced "Kuksu", a form of shamanism shared by many Central and Northern California tribes. Although, it is also possible that the Ohlone people learned Kuksu from other tribes while at the missions. Kuksu included elaborate acting and dancing ceremonies in traditional costume, an annual mourning ceremony, puberty rites of passage, intervention with the spirit world and an all-male society that met in subterranean dance rooms.