Guyana can be divided into four main geographical regions; there's a narrow and swampy coastal plain, a hillier sandy region in the east; the (15,000 sq km) Rupununi Savannah of the south, and the tropical rain forests and interior highlands - central and west.
Guyana's mountain ranges include the Pakaraima, Kanuku and Acarai. Many of these relatively low mountains are fronted by steep cliffs; waterfalls are plentiful including the massive Kaieteur Falls. (picture)
Kaieteur Falls itself is 251 meters (822 ft) in height and is one of the most powerful waterfalls in the world. It is about five times higher than Niagara Falls, and about two times the height of the Victoria Falls.
Guyana is a country replete with rivers; some flow in a northerly direction into the Atlantic Ocean, while those in the western parts of the country generally flow east into the Essequibo.
The five main rivers are the Essequibo, Berbice, Corentyne, Cuyun and Demerara.