Phazon mass is an obstacle that appears exclusively in Phaaze's Drop Shaft. It resembles a large flower bloom and is indestructible due to its hardened shell. To destroy it and access more of the chamber, Samus must let loose her Hyper Ball on several nearby growths sustaining the mass. Doing so will cause each to explode. Samus must destroy three to continue on with her exploration. The explosion of a mass is so strong that it will kill nearby Phazon Hoppers, but not Phazon Puffers or Tangle Weed.