Something unusual sits quietly in central Africa, and it doesn’t look dangerous at first glance. A vast, calm lake stretches across the landscape, reflecting the sky like any other scenic body of water. Yet deep beneath its surface, a very different world exists. Experts say enormous volumes of gas are trapped under extreme pressure, including methane and carbon dioxide. The lake looks stable on the surface, but scientists often warn that this balance might not last forever. Around its shores, millions of people live their daily lives, mostly unaware of what lies below. It is this contrast between calm water and hidden risk that makes Lake Kivu one of the most closely watched lakes in the world.