![People on a small wooden boat gliding across Lake Kivu with hills in the background.](https://cdn.mos.cms.futurecdn.net/X9Q65Nu3QiCFNNpQfCqEuZ-320-80.jpg)
Lake Kivu: The ticking time bomb that could one day explode and unleash a massive, deadly gas cloud
Lake Kivu, one of the African Great Lakes, sits along a tectonic plate boundary called the East African Rift, which is dotted with hot springs that feed carbon dioxide and methane into the water.