Fed from Dunshab Lakebed above, a steady stream of water enters the lake from a fissure in the ceiling. The water is cold and murky. It is filled with floating, bloated corpses.
A gigantic crystalline frog makes its home in the lake. It is clearly not of this plane.
It occurs to me now that the Saurians may very well be misguided in their ritual and some poor animal, lost from its home plane, is trapped below in a pile of uneaten corpses. - Gulpax's Journal (GS-Journal)
The cavern is dark, with the only light coming from the fissure above.
Decades before, the cavern was dry. No fissure was visible in the ceiling.
Saurian artisans once gathered here. They had a durgolium box in their possession. Opening it revealed a crystalline seed. The air suddenly came alive around them with crackling energy. Since that time, a giant crystalline frog has resided in the lake.
You have entered the lake in search of Zug's body. More importantly, you must retrieve the durgolium box that he had with him.
The cyrstalline frog surprises you in the water. In its mouth, you see a number of treasures, include the durgolium box.
Your success in retrieving the box lies in your own skill and knowledge.