Mountains of the Moon

Martin Waldseemüller's Tabula Nova Partis Africae (1541).

In the 5th century BC, Herodotus traveled to Egypt and of all the Egyptians, Libyans, and Greeks he met only one man could tell him the source of the Nile River. A scribe who kept a sacred register said the Nile flows from two enormous fountains between two hills with conical tops. 

Five hundred years later, Diogenes described seeing the Nile emerge from giant mountains that the natives refer to as the mountains of the moon because of the gleaming whiteness of their peaks. 

It wasn't until 1874 that the myth of giant fountains hidden in a mountain range with peaks as high as the moon was finally laid to rest. Lake Victoria was proven to be the true source of the Nile.