Scarce map of central Africa, illustrating the region to the south of Lake Chad, focusing on the explorations of Gerhard Rohlfs.
The map identifies the routes of a number of explorers, including:
- Gerhard Rohlfs -- 1866
- Major Denham -- 1824
- Dr. M. Barth -- 1851-1854
- Dr. Overweg 1852
The map translates as "Special map of the countries in the South Of Lake Chad, illustrated the travels of C. Rohlfs 1866 and other European travelers in this area."