Sapo National Park in Sinoe County, southwestern Liberia covers an area of 1,804 km² (697 sq mi). It is the country's largest protected area of rainforest and its only national park. Included in its boundaries is the second largest area of primary tropical rainforest in West Africa, after Taï National Park in neighboring Côte d'Ivoire.
Located in Liberia's least densely populated province, it is home to one of the most intact forest ecosystems in the nation. It is within the Upper Guinean forest ecosystem, a biodiverse region hosting the "highest mammal species diversity of any region in the world," according to Conservation International. The park lies within the Western Guinean lowland forests ecoregion according to the World Wide Fund for Nature's ecoregions classification scheme.
We strongly advise that you do not consume any of the local water in Liberia unless it is treated or alternatively purchased bottled water. Due to the country's poor sanitation, there is serious risk contracting water borne diseases
The dry season occurs from November to April and the wet season lasts from May to October. January and December are the driest months in the park, and May and August are the wettest months. There is a mid-dry period of decreased rainfall in July, which occasionally extends into August. During the dry season, many of the smaller streams dry up and their sandy and rocky stream beds are exposed. The dry season also causes the larger rivers shrink in size, exposing waterfalls and sandbars. In the rainy season, river levels can rise by more than 4 m (13 ft) in one night, inundating forests near the rivers.