The Yuribey river in the middle of summer. Large quantities of methane are stored in the Yamal peninsula in natural gas deposits, permafrost . Permafrost degrades on warming, thus large releases of methane from these sources will occur as a result of warming. Yamal peninsula has huge gas deposits, holding almost a quarter of the world’s known reserves. However if the tundra continues to thaw extraction processes and infrastructure will be increasingly costly and risky.