This heavy slab of smoky ice is filled with a webwork of cracks and air bubbles that display a tiny world of caves.
Wondrous Item 5,000 gp
This hunk of ice never melts, though it can burn like wood. It has 50 hit points.
Power Daily (Standard Action)
By closely examining the icegloom chart, you can determine a path to a desired location within the Shadowdark. The path doesn't reveal any hazards or enemies between you and the location, nor is it guaranteed to be the shortest route available. The chart details one possible path from your current site to the desired location. Once activated, this path remains apparent until you take an extended rest.
Published in Underdark, page(s) 121.