Volcano



The Volcano appears in Pyrosphere in Metroid: Other M. The volcano is seen erupting in the far background a long corridor, spewing chunks of rock at Samus that make Sovas to attack her. She ultimately stops the flow of the volcano after defeating Goyagma in the volcano's interior.

Pyroclasm in the Pyrosphere
"The Pyrosphere, a simulated volcanic area encompassing Sector 3, was predictably awash in magma flows, lava pools, and a host of beasts adapted to extreme heat. Nonetheless, finding an erupting volcano caught me off-guard, especially when it began raining chunks of flaming rock on me. The Varia feature of my suit quickly became necessary."

Trivia

 * The name "Volcano Island" was seen on a computer monitor in footage of the Metroid.jp interview. It is unknown if this referred to Pyrosphere or another area.
 * In the room where Samus is authorized to use her Ice Beam, chunks of lava are flung onto the floor as the Mellas begin to spawn from the Fly Pod. It is unknown if the Fly Pod was producing these, or if the volcano was erupting.