Vast Aztec trade networks behind ancient obsidian artifacts

treasures of aztecTreasures of Aztec is played over a 6×5 reel set up, with an escalating upper reel also in play that adds an extra row above reels 2, 3, 4, and 5.A brief account of the history of research on the Mexicana now in Vienna, from their rediscovery in the late 19th century to the present.