The Hopi say that during a great drought, they heard singing and dancing coming from the San Francisco Peaks. Upon investigation, they met the Kachinas who returned with the Hopi to their villages and taught them various forms of agriculture. The Hopi believe that for six months of the year, Kachina spirits live in the Hopi villages. After the Home Dance in late-July or early-August, the Kachinas return to the San Francisco Peaks for six months. The Hopi believe that these dances are vital for the continued harmony and balance of the world. It serves the further and vital purpose of bringing rain to the Hopi's parched homeland.