As enduring as the game-viewing is the liberating sense of space that characterises the Serengeti Plains, stretching across sunburnt savannah to a shimmering golden horizon at the end of the earth. Yet, after the rains, this golden expanse of grass is transformed into an endless green carpet flecked with wildflowers. And there are also wooded hills and towering termite mounds, rivers lined with fig trees and acacia woodland stained orange by dust,