Tourists gather to view wildebeests crossing the Mara river during a migration in Masaai Mara game reserve, 270 km (165 miles) southwest of capital Nairobi, July 28, 2009. The annual zebra and wildebeest migration is expected to attract a large number of tourists but there are fears on the dropping water levels due to the deforestation in the Mau forest complex; the largest indigenous forest in East Africa. Photo/FILE