![This is a close-up of the human skulls carved in stone by Mayans on a corner of the Tzompantli ruin at the ancient archaeological site of Chichen Itza on the Yucatan Peninsula This is a close-up of the human skulls carved in stone by Mayans on a corner of the Tzompantli ruin at the ancient archaeological site of Chichen Itza on the Yucatan Peninsula](https://c8.alamy.com/comp/MX75CA/this-is-a-close-up-of-the-human-skulls-carved-in-stone-by-mayans-on-a-corner-of-the-tzompantli-ruin-at-the-ancient-archaeological-site-of-chichen-itza-on-the-yucatan-peninsula-in-mexico-better-known-as-the-wall-of-skulls-or-the-skull-platform-plataforma-de-los-crneos-this-was-the-public-place-for-carrying-out-human-sacrifices-and-also-displaying-the-heads-of-dead-enemies-as-a-warning-to-potential-invaders-chichen-itza-was-one-of-the-largest-maya-cities-in-pre-columbian-times-and-is-now-a-unesco-world-heritage-site-and-major-mexican-tourist-attraction-historical-photograph-MX75CA.jpg)
This is a close-up of the human skulls carved in stone by Mayans on a corner of the Tzompantli ruin at the ancient archaeological site of Chichen Itza on the Yucatan Peninsula
![The Manned Submersible ICTINEU 3 concludes its immersions in PLOCAN'S Test Site – Plataforma Oceánica de Canarias The Manned Submersible ICTINEU 3 concludes its immersions in PLOCAN'S Test Site – Plataforma Oceánica de Canarias](https://www.plocan.eu/wp-content/uploads/2020/01/IMG-20200126-WA0003.jpg)
The Manned Submersible ICTINEU 3 concludes its immersions in PLOCAN'S Test Site – Plataforma Oceánica de Canarias
![Mayan jaguar heads carved in stone at the Venus Platform, Ancient Maya Ruins, Chichen Itza Archaeological Site, Yucatan, Mexico Stock Photo | Adobe Stock Mayan jaguar heads carved in stone at the Venus Platform, Ancient Maya Ruins, Chichen Itza Archaeological Site, Yucatan, Mexico Stock Photo | Adobe Stock](https://as2.ftcdn.net/v2/jpg/01/34/30/27/1000_F_134302786_C8ojodkXFy0gvlGwWXwO3iWZFMHVlWNo.jpg)