mountain in southwestern Togo, near the border with Ghana. An extreme western outlier of the Atacora Chain of adjacent Benin, it rises to 3,235 feet (986 m) and is the highest point in Togo. It was named for Oskar Baumann (1864–99), an Austrian-African explorer, when Togo (then called Togoland) was a German colony (1880s to World War I).