Nakuru is the third largest town in Kenya and its nearby lake provides visitors with one of Kenya's best known images. Thousands of flamingo, joined in a massive flock, fringe the shores of this soda lake. A pulsing pink swathe of life that carpets the water, the flamingo are a breathtaking sight. The lake has become world famous for these birds, who visit the lake to feed on algae that forms on the lake bed. They move back and forth, feeding and occasionally and spectacularly taking to flight, filling the sky over the lake with colour. The lake is extremely variable in size, changing from 5 up to 30 kms squared in area. Nakuru has more than just flamingos. This is a major National Park and an important sanctuary for rhino. Both black and white rhino are found here, and are often seen resting under acacias by the Lake shore.