Pre-columbian artifacts sit in a cave at the Mayan ruins of Chichen Itza, Yucatan, Mexico, March 5, 2019. 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 around 1,000 A.D. (Photo/Agencies)
Pre-columbian artifacts sit in a cave at the Mayan ruins of Chichen Itza, Yucatan, Mexico, March 5, 2019. 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 around 1,000 A.D. (Photo/Agencies)
Archaeologist checks the pre-columbian artifacts in a cave at the Mayan ruins of Chichen Itza, Yucatan, Mexico, Tuesday, March 5, 2019. 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 around 1,000 A.D. (Photo/Agencies)
Pre-columbian artifacts sit in a cave at the Mayan ruins of Chichen Itza, Yucatan, Mexico, March 5, 2019. 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 around 1,000 A.D. (Photo/Agencies)
Archaeologist Guillermo de Anda stands next to pre-columbian artifacts in a cave at the Mayan ruins of Chichen Itza, Yucatan, Mexico, Tuesday, March 5, 2019. 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 around 1,000 A.D. (Photo/Agencies)