Opal Ridge

Prisoners captured by the centaur are forced to work deep underground, mining opals in the heart of Desolace. Centaur use the gemstones to adorn their weapons and armor or to trade with goblins or quilboar for needed supplies. The mine's existence was a secret until recently, when a dwarf escaped and whispered about his captivity. He died before offering any indication of where the mine is, but this mystery has not stopped expeditions from heading out in search - some to liberate the prisoners who remain, others to take control of the mine and its supposedly limitless riches.