To the centre of the picture you can see the forest-covered slopes of the now dormant Oldeani Volcano. Three million years ago, this was a huge volcanic mountain estimated to be 4,500m high. It collapsed into the empty magma chamber beneath the crust leaving the gigantic caldera.

The crater rim, nearly 600m above the floor, encloses a vast grassland area with scattered trees and small freshwater lakes and springs, creating a mecca for wildlife such as wildebeests, gazelles, zebras, lions, hyenas and cheetahs.

The whitish area is a large salt lake whose water levels fluctuate from season to season and year to year. This lake is an important breeding site for flamingoes when the conditions are right.