Cameroon - The World Factbook

Lake Nyos in Cameroon

Lake Nyos is a crater lake located on the side of an inactive volcano in Cameroon. Beneath this lake, magma releases carbon dioxide gas, which seeps into the water.

"Magma beneath the lake leaks carbon dioxide into the waters."

This natural process involves gaseous CO₂ accumulating in the lake and can lead to dangerous releases if the gas suddenly escapes.


Lake Nyos is a unique geological feature where volcanic activity below the surface continuously influences the lake's chemistry.


Author's summary:
Lake Nyos, a crater lake on an inactive volcanic slope in Cameroon, is known for magma-driven carbon dioxide seepage that impacts its waters and environment.

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CIA (.gov) CIA (.gov) — 2025-11-24

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