'Sigi' is a society-wide ritual to honor and recognize the first ancestors. Thought to have originated as a method to unite and keep peace among Dogon villages, the 'sigi' involves all members of the Dogon people. Starting in the northeastern part of Dogon territory, each village takes turns celebrating and hosting elaborate feasts, ceremonies, and festivities. During this time, new masks are carved and dedicated to their ancestors. Each village celebrates for around a year before the 'sigi' moves to the next village. A new 'sigi' is started every 60 years.