“Fifty miles of glass you can’t cross.”

Across the southern sea, northeast of the Coven's Cauldrons, the Obsidian Abyss cuts the interior like a wound. From the coast you won’t see it; a low ridge hides the break until you are nearly on it. A long chasm of black glass, the Abyss is too sharp to grip, too brittle to trust, and deep enough that dropped stones never seem to hit bottom. Wind threads the gap and makes a thin, unpleasant singing.