The Guérewol occurs each year as the traditionally nomadic Wodaabe cattle herders gather at the southern edge of the Sahara before dispersing south on their dry season pastures.
The most famous gathering point is In-Gall in northwest Niger, where a large festival, market and series of clan meetings take place for both the Wodaabe and the pastoral Tuareg people.
[2] At the end of the rainy season in September, the Wodaabe travel to In-Gall to gather salt and participate at the Cure Salée festival, a meeting of several nomadic groups.
The Wodaabe Guérewol festival is one of the more famous examples of this style of repeating, hypnotic, and percussive choral traditions, accompanied by swaying line dancing, where the men interlink arms and rise and fall on their toes.
[1] The Guérewol ritual has become a foreign tourist attraction since western films, and magazines such as National Geographic have prominently featured images of the stylized performance.