Frighten Him On It – Sand painting used in the Mountain Chant, circa 1907″ by E.S. Curtis Like the Navajo Night Chant celebrated at winter solstice the Navajo Mountain Chant is the last important winter ceremony, one that marks the shift in seasons and the return of the light. The Mountain Chant was once nine days in duration; today it has apparently been shortened to a four – day ceremony. It is celebrated in early February and each night different holy songs are sung. The Mountain Chant is also a very complex healing series of ceremonies. Elaborate sand paintings are created and then destroyed after each healing. Disease may be diagnosed by either a woman or a man, but a Medicine man always leads the ceremonies. The intention is to cure a person of the disharmony that is creating the illness. The ceremonies are also enacted to pray to the holy people (Yei) for rain, and to receive assistance with the crops, and most importantly they are done to restore balance and harmony between the People and nature.