Nachtlicht
A cave complex under the kobold warrens in the Crossroads South area. Its entirety is bathed in a blue light emanating from the center of the cave, where a small island surrounded by waters can be found. On it, a construct protects three pools. These pools contain celestial crystals and serve as portals to a strange village resembling hamley, though populated by orcs.
The Nachtlicht houses bombardier beetles, umber hulks, will-o-wisps and some drow that emerge from the caves directly under it. A wizard's study can be found as well, where a tired and wounded adventurer can find some rest. Several corpses litter the ground of the cave, indicating that the place shouldn't be taken lightly.