Onyx Quarry

The Onyx Quarry, or Great Quarry, is a vast quarry, five miles wide, ten miles long and more than two miles deep, cut into the base of the mountains in southwestern Leng. It is said that this great quarry is the source of the onyx from which Kadath was built. It is surrounded by numerous smaller quarries still used by people living in the Dreamlands near Leng, who come via low mountain passes with yak caravans.