The word Gourounsi would result from the deformation of the word Guru-si which means in language Djerma of Niger " the iron does not penetrate ". During the invasion of Gurunsi by Djermas come from Niger towards 1860-1899 and led by Babatu. The naming Gurunsi " was wrongly employed until today to appoint a set of different ethnic groups who live in the Southwest of the tray(plateau) mossi. These various groups live generally under the authority of the ancient, " " priests of the earth "who are the descendants of the chalk-lining founder of the community villageoise.il needs to distinguish the very sacred, the oldest masks and thus the first ones revealed to the people, named Wankr of the other crowned masks named Wamu. These last ones travel many village in village and participate in numerous profane and ritual burial. The most sacred masks appear only during the ritual ceremonies and when they do not dance, They become altars dedicated to the sacrifices, as to most of the burkinabés groups. The masks of this region play a particularly educational role during the ceremonies of initiation of the young boys who reached the age of 10 years. During this " " school of bush " ", young people learn the history of their community, as well as the moral and religious rules necessary for their entrance to the world of the adults. The initiation also reveals them the meanings of the mask Real embodiment and support of this total education. The initiatory route of every initiated is strewed with pitfalls: physical, moral and spiritual events among which the fights with masks, very dreaded by the young initiated. """