Continuing east eventually leads to a dead end in the sewer tunnel. More or less a dead end anyway. There is a small stream of water flowing through an opening at the top of the eastern sewer wall and its just big enough to crawl into should one want to climb up there.
The green light is soon revealed to come from lichen frowing on the moist walls. The stream flows out from a pool of water, but one can walk around the southern edge of the pool on dry land. Above the sound of the moving water, Kalath thinks he hears music ahead.
Kalath decides that it might be best to walk around the pool, but as he walks past it he looks into it, trying to discern what, if anything, lies within the pool.
The pool is calm and serene, its dark waters reflecting the pale green glow from the strange lichen. Nothing can be seen in its depths.
Walking past the pool, Kalath comes to an area where the cave narrows a little and the green light softly siffuses (sp?) into a blue glow. There are many blue crystals growing from the walls. They would appear to be common quartz except for the inner glow they possess.
Now Kalath is certain he hears singing and the sound of soft musicfrom just ahead.