Subterrel was a planet within the Subterrel sector beyond the Outer Rim Territories, widely known for its extensive mining operations. Numerous beings worked in the mines, including a large labor force of Kaminoan-created clones, known as shovel-handed miners. At some point, Dexter Jettster spent time prospecting on the planet. Just prior to the Clone Wars, Jettster told Obi-Wan Kenobi that the last time he had seen a Kaminoan saberdart was in a mine on Subterrel.