Black dragon lairs are as foul as their souls. The floors are littered with rotting meat, and plundered treasures line the muck and slime of their dank caves amid twisted roots and creepers. Such places are often crawling with pests, snakes, and slimes. Though they claim natural caverns when they can, they make do with areas of dense, twisted vegetation within a swamp. Black dragon treasure hoards primarily consist of gems and expensive glass work, as valuables of softer substance can't survive the dragon's acidic presence.