You are in a small chamber composed of green malachite and blue azurite. In the center is a large round basin of green crystal. Water pours into the basin from a sinewy shape of carved aquamarine in the center of the font. As you get closer, the water in the basin begins to swirl and churn...coalescing into a vaguely serpentine shape... which appears to be regarding you intently.
There is a passage leading south.