The room is, as the name implies, mostly a Morph Ball tunnel. At first, there is a dome blocking the entrance to the tunnel, with Phazon Vines in the way as well. To destroy the obstruction, Samus must enter Morph Ball mode inside a Bomb Slot on the ground. Entering it will open the dome, and thus allow Samus to destroy the vines with the Hyper Ball.
- Phazon vines
- "Phazon vines are impervious to attack, but growths are vulnerable to Phazon-based weaponry."
- Bomb Slot
- "The pressure plate inside this slot controls the nearby hatch shutters."