A colossal dragon's lair built into the heart of a massive volcanic mountain, ancient stone chambers carved into obsidian cliffs surrounding a vast treasure hoard of gold coins and artifacts, rivers of molten lava flowing through crack channels casting dramatic orange and red glow, massive winged dragon coiled around golden throne, epic scale with tiny adventurers approaching the cavern entrance, dramatic low-angle perspective, warm amber and deep crimson color palette with stark black volcanic rock, dangerous ancient mood, Lord of the Rings cinematic scope, hyper-detailed matte painting, 8K fantasy art