Ballgames, which date back thousands of years, were once played across a broad swathe of the Americas by civilizations including the Mayas, Incas and Aztecs. Today, they being revived in Mexico and the surrounding region. Recently, a group of young players have decided to bring the game back to life in Mexico City at the site of an old garbage dump. "The game had been forgotten," says Emmanuel Kakalotl, who coaches players at the cultural center where the new ulama court was built.