Later, after acquiring the Boost Ball, Samus can return to the room and use the floor of the room, which is a Half-pipe, to reach a small alcove on the far-right side. Through a tunnel here, Samus will reach an observation area containing a Bomb Slot. If she activates it, the sand in the room will drain through a grate in the floor. A Missile Expansion is then revealed, and Samus can exit the observation window and collect it.
- Interface Module
- "Sand Drain control system online.
Energize the nearby control slot with a Morph Ball Bomb to begin the sand draining procedure."