Dor
this planetoid was the fourth, and outermost, world in the Endor System. Many historians believed that Dor's presence in the system was what drew Imperial forces to Endor, since its crust and mantle were exceptionally rich in pure metals, alloys, and crystals. Astrophysicists argued for many years about how the small planetoid could have become so rich in natural materials, including phobium, doonium, zersium, neutronium, iron, gold, and crystallized lommite. However, independent prospectors found it nearly impossible to penetrate the thick crust, and many small mining operations failed to turn a profit while trying to mine Dor. The Empire, however, used a massive concentration of firepower to crack Dor's crust open. Once spherical in shape, Dor was reduced to a ragged, unstable world that lacked any sort of structural integrity by the excavations of the Empire.