The Nile is generally considered the world's longest river. Through how many countries does the river flow?

The Congo River is the world's deepest river. It is also unique for crossing which geographic line twice?

Lake Victoria is Africa's largest lake by surface area, but is surprisingly shallow. What is the lake's maximum depth?

The Sahara Desert covers approximately what proportion of the African continent?

The Great Rift Valley is one of Earth's most dramatic geological features. It stretches from which country in the north to which country in the south?

Which African lake is the world's longest freshwater lake, stretching nearly 435 miles from north to south?

The Kalahari is often called a desert but is technically classified as what type of environment?

The Zambezi River passes through six countries before reaching the sea. Which of the following is not one of them?

Lake Turkana in Kenya is the world's largest permanent desert lake. By what other name is it sometimes called?

The Namib Desert is considered the world's oldest desert. Approximately what is its age?