The Quarry was an area of six statues that resembled the Toa Mata's masks. One of the statues contained a secret passage leading to a Nui-Jaga nest, which was where Ahkmou got his infected Comet balls. The nest was subsequently destroyed by Takua and Toa Pohatu.
The Po-Matoran built the Quarry inside a canyon formation in the Desert. It was here that the Po-Matoran mined for stone to be used for carvings.