In 1895 Bottego, with three European companions, left Brava to investigate the river system north of Lake Rudolf, and succeeded in tracing the Omo to that lake.
This lake receives at its northern end the waters of the Omo, which rises in the Shoa highlands and is a perennial river with many affluents.
Dundas of the British navy, while in1892-1893its headstreams were explored by the Italian officers, Captains Vittorio, Bottego and Grixoni, the former of whom disproved the supposed connexion of the Omo (see Rudolf, Lake) with the Juba system.
After the Toledo War (see Toledo, Omo), to recompense Michigan for her losses to Ohio the northern peninsula, geographically a part of the Wisconsin region, was given to Michigan.