|This article is about an older version of DF.
A cave is a natural formation that occurs in any area, consisting of a circular entrance on the surface leading to narrow winding passageways that span several Z-levels. Caves are sometimes home to hostile creatures, named "current residents", as well as several of a randomly selected chasm creature.
Starting a fortress on a cave by accident is somewhat rare, however they can be made visible as an advanced parameter () during Design new world with parameters and then show up on the embark screen. Another way to find them is to take quests, ask about the surroundings, and scout for them in adventure mode. This will place them on your map, and also on the embark map for fortress mode.