Kaolack (Kawlax in Wolof) is a town of 172,305 people (2002 census) on the north bank of the Saloum River and the N1 road in Senegal. It is the capital of the Kaolack Region, which borders The Gambia to the south. Kaolack is an important regional market town and is Senegal's main peanut trading and processing center. As the center of the Ibrahimiyya branch of the Tijaniyyah Sufi order founded by Ibrayima Ñas, it is also a major center of Islamic education. The leona niassene mosque (right) in Kaolack is one of the largest and best known in Senegal.