Snow Mountain Stage

Snow Mountain Stage (雪山ステージ), also known as Snowfield Stage (雪原ステージ) and Abandoned Missile Base, is Chill Penguin's stage in the Mega Man X, Mega Man Maverick Hunter X, and Mega Man Xtreme.

Mega Man X / Maverick Hunter X
It is a snowy mountain that was taken by Chill Penguin, from where he planned to use avalanches to crush nearby cities under tons of snow (or in the case of Maverick Hunter X, launch missiles). X had the task to stop him before it happened. The stage begins outside, before going underground and climbing back upwards. There is then a Ride Armor available, followed by an upward slope section before the boss room. If the player completes the stage, the lava in the Factory Stage (Flame Mammoth's stage) will be frozen, allowing X to walk over it with impunity.

Notably, in the original Mega Man X the Foot Parts capsule is entirely unavoidable. However, in Maverick Hunter X the capsule contains the Helmet Parts and is relocated to a more discreet location.

Mega Man Xtreme
A digital recreation of the stage appears in Mega Man Xtreme, created by the Mother Computer. It is identical to its original appearance, except the Ride Armor is now a Rabbit Ride Armor.

Mega Man X / Maverick Hunter X

 * Armor Soldier (with Ride Armor)
 * Axe Max
 * Bat Bone
 * Bomb Been
 * Flammingle
 * Jamminger
 * Ray Bit
 * Snow Shooter
 * Spiky
 * Tombot

Mega Man Xtreme

 * Axe Max
 * Bat Bone
 * Flammingle
 * Jamminger
 * Rideloid-G
 * Snow Shooter
 * Spiky

Items

 * Life Up: Jump out of the Ride Armor and on top of the cave. Destroy the Tombot hives using Fire Wave to reveal the Life Up.
 * Foot Parts (X, Xtreme): The capsule is at the top of the first indoor segment. It is unavoidable, filling the entire hall.
 * Head Parts (MHX): During the climb up the vertical indoor part, some breakable blocks can be seen on the right. Break them open with the Foot Parts to gain access.

Other media
The mountain appeared in the Rockman X manga, in Irregular Hunter Rockman X, and Rockman X The Novel: Irregulars Report.