The city includes large pyramid-like buildings, stone columns, three plazas with "imposing buildings" and other structures arranged in almost-concentric circles, the INAH institute said.
INAH said the city, which it has named Ocomtun - meaning "stone column" in the Yucatec Maya language - would have been an important center for the peninsula's central lowland region between 250 and 1000 AD.
It is located in the Balamku ecological reserve on the country's Yucatan Peninsula and was discovered during a search of a largely unexplored stretch of jungle larger than Luxembourg.
The Maya civilization, known for its advanced mathematical calendars, spanned southeast Mexico and parts of Central America.
Pre-Hispanic ball games, widespread throughout the Maya region, consist of passing a rubber ball representing the sun across a court without the use of hands and getting it through a small stone hoop.
Persons:
INAH, Ivan Sprajc, Sprajc, Sarah Morland, Edwina Gibbs
Organizations:
Mexico's National Institute of Anthropology, Mexico's, Read, MEXICO CITY, Central America, Thomson
Locations:
Campeche, Mexico, MEXICO, Yucatan, Luxembourg, Central