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Cuicuilco Pyramid

What do you think about this?

On the southern edge of Mexico City, swallowed by a field of black volcanic rock, sits a pyramid that almost no one talks about, and it may be the oldest in all of Mesoamerica. Cuicuilco was built around 2,700 years ago, long before the Aztecs, long before even the great city of Teotihuacan. And unlike the famous step pyramids, this one is round, a series of stacked stone rings rising from the plain.

Then the mountain came for it. A volcano called Xitle erupted and sent a river of lava across the entire site, burying the temple and the city around it under as much as seven metres of solid rock. In places the stone lies more than thirty feet deep. For most of the structure, excavation is simply impossible. We have only uncovered the top.

So we are left guessing. How old is it really, when the lava sealed away the lower layers and the foundations we would need to date it? Who built a round pyramid here, and why, before the cultures we credit with inventing them? The survivors of that eruption are thought to have walked north and helped build Teotihuacan, carrying whatever they knew with them.

Makes you wonder how much older our history runs than the parts we are able to dig up.

A forgotten first chapter of Mesoamerican civilization, or just an early experiment frozen in lava? What do you think is still buried under Cuicuilco?

KEEP DIGGING

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What do you think about this? Today is the equinox, and at Chichén Itzá a serpent of light will crawl down a pyramid built with 365 steps. Clap at its base and the echo chirps like the sacred quetzal bird. Brilliant engineering, or knowledge from somewhere older?

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Gunung Padang

What do you think about this? Scans of Gunung Padang in Indonesia show hidden chambers deep inside the hill, and one team dated its oldest layers to 25,000 years ago. The study was retracted in 2024. The chambers have never been opened. Natural hill, or the oldest pyramid on Earth?

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Waverly Hills Sanatorium

What do you think about this? Waverly Hills Sanatorium in Kentucky built a 500 foot tunnel just to move its dead out of sight of the living. It closed in 1961. Visitors still report a boy rolling a ball across empty floors. Restless spirits, or a dark building playing tricks on the mind?

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Rennes-le-Château

What do you think about this? In 1891, a poor French priest named Bérenger Saunière began tearing up his church floor, then spent the next two decades funding lavish buildings on a stipend that should not have covered it. Real treasure, or a secret about how he ran his church?

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Puma Punku

What do you think about this? Puma Punku’s H-shaped stone blocks, cut from andesite by a culture dating to roughly 600 CE, are flat to within a couple millimeters, with no known metal tools hard enough to do it. Lost technique, or something we haven’t caught up to yet?

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