"Bubble Mountain" is an unofficial term for a large room of Norfair in Super Metroid. Hence the name it is comprised of green bubble-like material in a mountain-like formation. It has seven Doors, the two highest of which are Green Hatches. Bubble Mountain serves as a junction between rooms of Norfair, including a Save Station, a corridor connecting to the Frog Speedway, and another corridor leading to the Speed Booster. A small number of Grapple Points exist on the ceiling, although they become superfluous with the Space Jump.