At that time they traveled for three weeks through the north east section of Kenya including Maralal, Lake Rudolf, and Marsabit before returning to Nairobi.

He was the first European to see, and name, Lake Rudolf (Lake Turkana).

In Search of Man's Past at Lake Rudolf, May 1970, pp.

The Toposa language became a lingua franca to the west of Lake Rudolf and throughout most of Eastern Equatoria.

Charaxes kirki suk (Uganda: central and north to the area west of Lake Rudolf)

The largest river is the Omo, which, fed by the rains of the Ethiopian highlands, carries down a large body of water into Lake Rudolf.

His long term aim to reach Lake Rudolf (now known as Lake Turkana) was attained on an expedition conducted in 1895.

However the hunting around Lake Rudolf was not a success as the terrain was difficult and a bitter wind blew.

It was no avail and after a final hunting trip to Lake Rudolf in 1906 it became clear that his days as an elephant hunter were over.

In his second expedition (1895-1897), he ventured into the then unknown region of the upper Juba, Lake Rudolf and the Sobat.