Gilgil is a small town on the edge of the Great Rift Valley, between Naivasha and Nakuru. The Malewa river flows down from the Aberdare Range and on into Lake Naivasha. This river has trout in it.
Close by is Lake Elementaita, a soda lake which is a haven for many resident and migrant birds, and seasonal home to flocks of Flamingo. There is a pre-historic site at Kariandusi.