You move down the southeatern branch, continuing on as the corridor turns south. Before you, the hall opens into a dark chamber: all the stonework here is black, the surfaces polished to a smooth, glossy luster. The ceiling domes overhead, some thirty feet above, and twinkles with phosphorescent gleams: each small dot appears to represent a star, and the dots seem to form complex patterns of constellations. A broken obsidian altar stands in the center of the place. Otherwise, it appears to be empty.
An arched exit, seven feet wide by twelve high, breaks the wall to the south. Above this archway are letters carved in the common tongue: EXHAULTED CHAMBER OF HIGH AUGURY.
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