Phendrana Shorelines

From Wikitroid, the Metroid wiki

The Phendrana Shorelines is a room in the Phendrana Drifts, found in Metroid Prime. It contains two Missile Expansions, and is the "main room" of Phendrana in that it is one of the largest and quasi-connects all the areas, although it could be seen as just the main room of the Ice Ruins area of Phendrana.

After recieving the Boost Ball, when Samus returns to this room, she sees Meta Ridley flying toward the Phazon Mines, possibly warning the Space Pirates that Samus was on Tallon IV.