The Main Quarry is a room in the Phazon Mines in Metroid Prime. As its name states, it is one of the main rooms in the Phazon Mines. The atmosphere seems to be largely polluted around the Mines, as seen by the hazy, pink sky and a factory pumping fumes into the air. A Dual-Control Force Field controlled by two terminals blocks the way to Security Access A. A Spider Ball Track leads to the area's first Save Station.