A volcano in northeastern Tanzania is showing signs it may erupt.
The Ol Doinyo Lengai - called the 'Mountain of God' by the Masai people - is the only known active volcano with lava that can move faster than a person.
It's now threatening nearby villages and three major sites of early human development.
Al Jazeera's Catherine Soi reports from the foothills of Ol Doinyo Lengai.
