Ophianos

Ophianos, also known as the Obsidian Plains, is a vast plain of volcanic glass that stretches hundreds of miles across the Plane of Fire. For the most part, Ophianos is a mirror-like flat plain of obsidian. At its center is the strange land of Aralidae, where strange tree-like structures and webs of obsidian provide a home for the mysterious obsidian spiders. These terrifying predators lurk beneath the Obsidian Plains, and few outsiders would have reasons to visit the area if not for a magical song of unknown origin that lures travelers towards Aralidae.