Bitter Well is a room in the Dark Agon Wastes sector from Metroid Prime 2: Echoes. Most of it consists of a Morph Ball tunnel, and Phazon can be found on either end and in the middle of the room. Samus can use Morph Ball Bombs to jump across the Phazon without taking damage. Its light world equivalent is Ventilation Area B.
- "Element: Phazon
Volatile ore with biomutagenic properties.
Origin point of Phazon unknown. First detection of element on planet Tallon IV. Used by Space Pirates to produce vast levels of energy."