but scientists say nothing can be left to chance hansen is a professor at the university of duress alarms geology department he says tanzania needs a working observatory center to be able to keep a close eye on the mountain itself rather than getting information from other countries experts it has been unfortunate that even. continually people from germany. europe they have no information because they have been working at the moment and the new do disguise the know much more scientifically than what we have. because they have money this is the world's only active volcano that bulges out of black love a reach with a type of rock borne a tight when it comes to contact with it turns white. have been recorded here since. the largest deposited one hundred kilometers away and that's a concern because a mountain is also close to important ancient historic sites like this one on the southern shores of lake notch on named the dance floor more than human footprints left between five and nine hundred thousand years ago and preserved by debris and ash from the volcano those who live on the foothills of the mountain hav