The unnatural luminescense of the walls fades away as you one after the other climb down the chasm into a warm, claustrophobic darkness. From time to time you can hear Kaj cursing quietly to himself when he barely manages to force his hulking body past the narrower parts of the passage, followed by a similar sense of frustration from Big at the other end of the party. You can soon feel the wetness and acrid scent of half-demonic blood on some of the jagged protrusions in the rock, and eventually most of you suffer aches, cuts and bruises of your own from your descent. If you did not feel the draft of warm air from below you would probably fear that the Dwarf had led you into a trap, tricking you into burying yourselves alive in vengeance for his loss.
The chasm seems to go on forever until suddenly your climb comes to an end. With a pale light shining up from below Kaj twists his body around another obstacle, squeezing past with his hips and stomach, before getting stuck by his chest and shoulders. His whisper comes as a hiss of frustration. "I'm stuck."
Above you is only darkness.