Ridley's Lair

Ridley's Lair, also known as Ridley's Hideout,  is an area encountered by Samus Aran in Metroid, its remake, and Super Metroid from the franchise with the same name, owned by Aran's arch-nemesis Ridley.

Located in the deepest trenches of Zebe, Ridley's Lair is flooded with lava and is where Ridley himself can be faced, backed up by several of Samus' extraterrestrial foes.