A dark shape looms in the water, beckoning through the depths to a shallow precipice. At first, it looks like another shipwreck, but moving closer, enough light filters through from the surface to show a much more intriguing treasure. Forgotten towers and crumbling walls rise up from the silt, their surfaces dotted with patches of coral and undersea life. Cracked tiles and shiny bits of obsidian can still be seen decorating some of the structures, and other, highly tarnished adornments could be made of silver or even gold. On the east-facing wall of the city, between the remnants of two towers, an impressive archway still rises above the ocean floor. Through this cracked, but still beautifully tiled structure, the rest of the lost city beckons...