The Maya name was Cob Ha and means muddy water, named after the muddy lagoons close to the site. Coba is the largest and oldest Mayan Ruin site in the Yucatan, with an estimated 6,500 structures dating back to 200 B.C. Coba has the highest pyramid in the Mayan world, at nearly 140 feet ( 42 m ) high, with 120 steps to the top, giving you a fantastic view over the jungle.
Coba is estimated to have had significantly more than 50,000 inhabitants at its peak of civilization, and the built up area extends over some 80 km². The site was occupied by a sizable agricultural population by the 1st century. A series of elevated stone and plaster roads radiate from the central site to various smaller Maya sites near and far. These roads are known by the Maya term sacbe. Some of these sacbes go east to the Caribbean coast, and the longest runs over 100 kilometres (62 mi) westwards to the site of Yaxuna and connects from there to Chichen Itza.