A large-scale, drought-induced famine occurred in Africa's Sahel region and many parts of the neighbouring Sénégal River Area from February to August 2010. It is one of many famines to have hit the region in recent times. The Sahel is the ecoclimatic and biogeographic zone of transition between the Sahara desert in the north of Africa and the Sudanian savannas in the south, covering an area of 3,053,200 square kilometres. It is a transitional ecoregion of semi-arid grasslands, savannas, steppes, and thorn shrublands.