After this trip, Rohlfs was the first European to cross Africa from Tripoli across the Sahara desert via Lake Chad and along the Niger River and to present-day Lagos on the Gulf of Guinea from 1865-1867.
Rohlfs was the first European to cross Africa from Tripoli across the Sahara desert via Lake Chad and along the Niger River and to present-day Lagos on the Gulf of Guinea from 1865-1867. This was after this trip.