The Ogooué River is the main river of Gabon, formerly part of French Equatorial Africa. The river and its tributaries drains nearly the entire country, and empties into the Atlantic Ocean in a large delta that includes Cape Lopez, near the city of Port-Gentil. In the early twentieth century, the river was the primary route of transportation across the country. The river meanders through rain forest and some grassland, and is home to many wildlife species, including several types of crocodile.