The Yagán people had similar Initiation rituals to the Kawésqar and the Chonos people. These rituals took place when a group of young people reached the age of adolescence, and when there was enough surplus food to be able to have a break in the constant search for substance (a beached whale for example).
According to the observations of the chroniclers of the time, they buried their dead in natural caverns and forests.
The Chiejaus was a veritable school for tribal customs, norms and knowledge necessary for the survival of the community. A fundamental principle in the life of these canoeists was learned: «We, men and women, first of all must be good and useful to the community ».