fantasy teahouse, wooden structure, intricate carvings, ambient lanterns, hidden trapdoor, moss-covered stairs, descending, mystical underdark entrance, bioluminescent fungi, stalactites, stalagmites, underground river, glowing crystals, cavernous landscape, ethereal atmosphere, soft diffused lighting, wide-angle view, adventurers with torches, explorers in leather armor, cautious steps, echoing sounds, fantasy creatures lurking, 3/4 composition, high detail texture, atmospheric perspective, magical environment.