Liberia the Cestos River, all of which flow into the Atlantic. The Cavalla is the longest river in the nation at . The highest point wholly within Liberia is Mount Wuteve at above sea level in the northwestern Liberia range of the West Africa Mountains and the Guinea Highlands. However, Mount Nimba near Yekepa, is higher at above sea level but is not wholly within Liberia as Nimba shares a border with Guinea and Ivory Coast and is their tallest mountain as well. Forests on the coastline are composed mostly of salt-tolerant mangrove trees, while the more sparsely populated inland has
History of West Africa to date is the ongoing 2014 West Africa Ebola virus outbreak, which is affecting Guinea, Sierra Leone, Liberia and Nigeria The outbreak began in Guinea in December 2013, but was not detected until March 2014, after which it spread to Liberia, Sierra Leone, and Nigeria. The outbreak is caused by the "Zaire ebolavirus", known simply as the "Ebola virus" (EBOV). It is the most severe outbreak of Ebola in terms of the number of human cases and fatalities since the discovery of the virus in 1976. , the World Health Organization (WHO) reported a total of 2,240 suspected cases and