Coba (Cobá in the Spanish language) is a large ruined city of the Pre-Columbian Maya civilization, located in the state of Quintana Roo, Mexico. It is located about 90 km east of the Maya site of Chichen Itza, about 40 km west of the Caribbean Sea, and 44 km northwest of the site of Tulum, with which it is connected by a modern road. Source