Seeking a relic, you find yourself excavating a dwarven tomb. Besides the oppressive weight of the mountain above the work is quiet, uneventful even. But...there always seems to be something just out of the corner of your eye and you can't shake the feeling that there's something off about the collapsed passageways making access into the deeper chambers so much harder.

A dwarven tomb that has since become home to kobolds, goblins or something similar. They are able to navigate using secret tunnels but will your players be able to do the same?