


Like the continents or regions of the surface world, domains tend to group disparate cultures together and force them to interact with each other for good or ill.įaerûn's Underdark consists of seven major domains, a dozen or so minor ones, and hundreds of otherwise isolated locales that don't appear to connect (at least not easily) to any other Underdark networks. Cities and settlements in the same domain are much more likely to engage in diplomacy, trade, or warfare than cities in separate domains. Similarly, two locales in a single domain are connected by enough cave systems, tunnels, and other passages to enable travel from one to the other without leaving the Underdark. It may feature several distinct terrains and cultures, but it's possible to travel all over the island without having to set sail on the ocean.

In certain places it may be possible to trail-blaze a route from one domain to another, but then again, it may not.Īn Underdark domain is something like a large island in the surface world. A domain is simply a collection of Underdark locales among which underground travel is reasonably easy. In fact, the Underdark consists of a number of discrete domains. The existence of Underdark settlements beneath Waterdeep and Raven's Bluff, for example, does not mean it is possible to travel from one city to the other underground. Underdark Domainsįaerûn's Underdark is not a single, contiguous cavern system, and even places on the same level may not connect to each other. Consider the places discussed in this section to be the ones the knowledgeable surface folk know of, and a sampling of the type of places that deep-delving heroes might explore. Uncounted hundreds - perhaps even thousands - of deeply buried caverns and lightless cities exist beneath Faerûn, and virtually every surface-world dungeon seems to connect to murky depths from which all sorts of horrors can spew forth. The locales described here do not represent an exhaustive list of Underdark realms. The section describes some of the most notorious, important, and incredible locales in the Realms Below. Faerûn's Underdark includes drow cavern-cities, sunken aboleth strongholds, entire realms of mind flayers, and wondrous vistas shrouded in everlasting darkness.
