The Copper Mountain is one of the most prominent peaks of the mountain range that surrounds the Tanglelight Forest like a crescent. It is the easternmost peak, and guarded by the Malachite Maid.
On the seaward side of the Mountain, there is a group of mines built by the Republic of Jagriarius, called the Three Jaws. A natural cave system that starts on the side facing the Forest leads into the subterranean depths, rich with minerals and other riches of the earth.