Wormwood: Carved long ago out by miners and enormous beasts, Wormwood is an gaping cavern far below the surface of the earth, accessible only by confusing tunnels and treacherous drops. Marked by only a tiny outpost above, cave-dwelling Thalla hawk out carefully made maps and anxious warnings of death. The area has grown into a sprawling city, and many different races have called this place their home.

Lantur Mine: Adorned with many wooden support beams and flashes of metal gleaming from the rock walls in the right light, this long-abandoned tunnel has mostly been forgotten, except by the natives and a few explorers. It wasn't left abandoned because of lack of mineable resources or miners, no—safety became a huge issue. A large portion of the mine collapsed decades ago, causing several fatalities and the mine's closing. Still, there are many precious metals and ores to be extracted, and only the bravest of creatures take the risk.

The Wurm Nest: A massive cavern in Devil's Ribcage is inhabited by Wurms, and where there are Wurms, there are impulsive, immature Vespers on the search (or dare) for one of their scales. Most of these beasts sleep in this cavern, which is not far from Wormwood, known as The Wurm Nest. Although the dangerous creatures can be encountered almost anywhere in Devil's Ribcage, most of them rest here, and waking up one will wake up the rest. Be careful.

Spirit Pools: Deep in Devil's Ribcage lies a massive cavern filled with shallow cave pools. Formed over thousands of years from water dripping from stalactites, these water-filled discs make up the only adequate fishing location in the region. It isn't that hard to fish here because the pools are so shallow - the hard part is actually finding the fish. The little creatures are abundant but are spread throughout the cavern, and each pool usually only has a few fish. The fish in Devil's Ribcage have adapted to breathe air as well, and they often "walk" from pool to pool. Although the fish make great snacks, this area is not for the faint-hearted. Vespers have fled due to unexplained sounds and the manifestation of the occasional apparition.

Cavern of Kings: Devil's Ribcage is well-known for the carvings and statues that line the massive tunnels, but the most intricate series of carvings lies in the Cavern of Kings. Carvings line the walls and ceiling of the cave, and a sunken river lines each side of the large path through the cavern. Statues stick out of the river, depicting various races in different poses. Full-grown Vespers appear tiny compared to the size of the artwork here. A crack in the wall, wide enough for a Vesper to walk through, sits at the far end of the cavern, letting the light of the outside world pour in and illuminate the ancient works.