Arthur lumbered deeper into the cavern, his heavy claws scraping over loose gravel, each step sending low vibrations through the ground. The heat pressed against him relentlessly, thick and suffocating, like the air itself wanted to choke him out. His wings twitched against his back, tucked tight to avoid scraping the walls. The cavern was massive, yawning open in all directions, with tunnels twisting off into the darkness like arteries leading deeper into the heart of the island.