The Gambia is a very small and narrow country whose borders seem to follow the path of the meandering Gambia River, and at less than 30 miles wide at its widest point, nearly 10% of the country's land area is covered by water.
The Gambia River itself is one of Africa's major rivers. It stretches 1,130 km (700 miles) from northwestern Guinea all the way to the Atlantic Ocean at the city of Banjul. It is navigable for about half of that length.
The remainder of Gambia's terrain is a grassy flood plain with Guinean mangroves covering the landscape as you move closer to the coastline; the Sudanian Savanna lies further inland.
The highest point of the country is an unnamed hill at 174 ft (53 m), and the lowest point is the Atlantic Ocean (0 m).