Glass Plains -- The Past The Glass Plains were split, long ago, creating the deep Istoral Trench, which divides the Glass Plains. The exact cause of the split is now known to only a few, but even to the untrained, it looks as if the entire was quickly heated and cooled by some momentous event, producing the brittle, glassy surface. Some of the weaker areas crunch under foot, but others are deceptively smooth, almost frictionless. Shattered reflections are everywhere, looking back at any travelers, silent witnesses to the massive thermal upheaval that transformed this land. WHAMMMM!