Tulum Chichen Itza ancient drawings stone monuments stone monuments stone monuments ancient Maya city of Chichén Itzá a place of sacred sacrifice stone monuments Chichen Itza stone monuments Mayan temple estimating infant ages Chichén Itzá Tulum Mayan temple stone monuments Mayan temple Chichen Itza building Chichen Itza. Chichén Itzá Mayan temple Chichen Itza sacred Cenote Chichen Itza: Maya Temples in the Yucatan Chichen Itza Tulum LiveScience - Chichen Itza: Maya Temples in the Yucatan