The city, which has been named Valeriana by archaeologists, was found by studying laser scans that had been taken in 2013 as part of a forest monitoring project in the southeastern state of Campeche.

Mexican archaeologists say they have found a cave at the Mayan ruins of Chichen Itza with offerings of about 200 ceramic vessels in nearly untouched condition. The National Institute of Anthropology and History says the vessels appear to date back to…