This document provides an overview of the physical geography of Africa, including its size, major bodies of water, rivers, mountains, deserts, valleys, climate, and vegetation zones. It notes that Africa is the second largest continent, covering about 11.7 million square miles, and is home to over 1 billion people. Several key facts are highlighted, such as the Nile River being the longest river in the world, the Congo River basin extending over 9 countries, and the African savannah covering 13 million square miles.