Coba 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.
Coba's Nohoch Mul pyramid
Coba is located around two lagoons. A series of elevated stone and plaster roads radiate from the central site to various smaller sites near and far. These are known by the Maya term sacbe (plural sacbeob).
Some of these causeways go east to the Caribbean coast, and the longest runs over 100 kilometres (62 mi) westwards to the site of Yaxuna. The site contains several large temple pyramids, the tallest, in what is known as the Nohoch Mul group of structures, being some 42 metres (138 ft) in height.
Coba is estimated to have had some 50,000 inhabitants (and possibly significantly more) 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.
The bulk of Coba’s major construction seems to have been made in the middle and late Classic period, about 500 to 900, with most of the dated hieroglypic inscriptions from the 7th century. However Coba remained an important site in the Post-Classic era and new temples were built and old ones kept in repair until at least the 14th century, possibly as late as the arrival of the Spanish.