Beyond the reach and control of the gold dwarves lies a portion of the Underdark called the Deepwild. Known as Great Bhaerynden to the rest of the inhabitants of the subterranean realms, the Deepwild stretches outward beneath the Shaar in all directions, well beyond the boundaries of the Deep Realm. Included in this territory is the accursed drow city of Llurth Dreier, where Ghaunadaur reigns supreme. The Deepwild also encompasses a series of dragon lairs known as the Wyrmcaves and a huge underground waterfall called the Deepwall.
Once the ancient home of the dwarves, the city of Bhaerynden once sat where the Great Rift is today, but deeper beneath the surface. Millennia ago, when the drow first descended into the Underdark, they invaded and conquered Bhaerynden and renamed it Telantiwar. Some time later, the great caverns that made up the heart of their new domain collapsed. Billions of tons of earth and stone came crashing down, crushing a dozen drow cities and forming the Great Rift on the surface. Though the settlements in the center of the region were destroyed, the leagues of tunnels around the periphery of the Great Rift remain intact and in use by various denizens of the Underdark.