Roughly 72 cubic miles (300 cubic kilometers) of CO2 and 14 cubic miles (60 cubic km) of methane sit at the bottom of Lake Kivu, Katsev said, which is also laced with hydrogen sulfide gas from the ...

"If there was a big underwater volcanic explosion, it could cause an eruption of all this gas that would flood the urbanised shores of Lake Kivu, which would be an incredibly dangerous thing to ...