Mokele Mbembe

A lot of times people thought about the existence of living dinosaurs in remotes places like rainforests.
The first real evidences of this theory came out in 1913, during a german expedition in the Lukouala region, in Congo. This expedition showed a report about a big animale that lived in the main rivers of this zone, and this animal was called "Mokele Mbembe" by pigmyies.
They said that his colour was dark grey, with a flat leather, big as an elephant. Somebody said that his neck is very long and that has a long tooth or horn, and a tail like crocodiles.
Some years after the WWI, there where some reports, in Congo, near the Bangweulu lake, that turned out to be fakes. An explorer, Leon von Boxberger, that traveled through Camerun said that the natives believed in the existence of a huge acquatic animal, with a very long neck near the Congo river.