WIP: Thunder Mountain Background and Concept (Patreon)

Thunder Mountain is so named because rather than one tiny island, it is actually a massive shard of obsidian. Inside of it is a roiling sea of magma and magical energies drawn driectly from the void below. The surface of it is far too volatile and unsafe to support any life or anything but the most tenacious of Union outposts, but the interior, despite being a roiling hellscape of magically infused molten rock and metal, has a variety of monsters within it.

The mountain, and others like it, are believed to be the source of new sky islands, throwing heavy, molten, magically infused dust, ash, and rocks into the sky, where they hang, coalescing into new sky islands.