Dungeons of any type are often comprised of different levels and sublevels, and there need to be ways to travel between these locations, which in this supplement are called level connectors. Stairs are the most obvious method, but they are not the only one, and here are thirteen different ways of going from one level of a dungeon to another, some of which will only easily allow travel one way.
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Here is a brief overview of a connector:
Sinkhole: A sinkhole in the floor of a natural cavern leads into the chamber below and characters may end up unintentionally descending a level.
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