History of West Africa stretches north through the forested tropical regions and ends at the Sahel. The Guinean Forests of West Africa is a belt of tropical moist broadleaf forests along the coast, running in the west from Sierra Leone and Guinea through Liberia, Côte d'Ivoire and Ghana and Togo, ending at the Sanaga River of Cameroon in the east. The Upper Guinean forests and Lower Guinean forests are divided by the Dahomey Gap, a region of savanna and dry forest in Togo and Benin. The forests are a few hundred kilometres inland from the Atlantic Ocean coast on the southern part of West
Geology of Liberia Geology of Liberia The geology of Liberia is largely extremely ancient rock formed between 3.5 billion and 541 million years ago in the Archean and the Neoproterozoic, with some rocks from the past 145 million years near the coast. The country has rich iron resources as well as some diamonds, gold and other minerals in ancient sediment formations weathered to higher concentrations by tropical rainfall. Two billion to 1.6 billion year old Archean and Paleoproterozoic underlie 90% of Liberia, forming the Man Shield, part of the West African Craton—a region of stable continental crust leftover from early continent formation. The