Chicxulub Crater, Yucatan Peninsula
Photo: NASA/JPL-Caltech, modified b, Public domain, via Wikimedia Commons
The Chicxulub crater is a massive impact structure approximately 150 kilometers (93 miles) in diameter, buried beneath the Yucatan Peninsula and extending into the Gulf of Mexico. Created by an asteroid or comet impact roughly 66 million years ago, the crater is largely invisible to visitors today, hidden beneath layers of sedimentary rock and jungle. The impact site is centered near the town of Chicxulub Puerto, where only subtle geological formations hint at the catastrophic event that reshaped Earth's history. This buried crater represents one of the most significant geological features on our planet, marking the boundary between the Mesozoic and Cenozoic eras.
Timeline
Massive asteroid or comet impact creates the Chicxulub crater and triggers the Cretaceous-Paleogene mass extinction
Geophysicist Glen Penfield discovers circular magnetic anomaly while working for Pemex oil company
Scientists confirm the structure as an impact crater and link it to the dinosaur extinction
What the Show Claims
- ›The Chicxulub asteroid impact may have been a deliberately directed extraterrestrial weapon intended to exterminate dinosaurs and clear the way for human evolutionS04E10
Theorist Takes
“Did advanced E.T.'s direct an asteroid to that spot? It's within the realm of feasibility that advanced E.T.'s indeed directed an asteroid to the Yucatan Peninsula.”
From the Transcripts
“An eight-mile-wide asteroid hurtles towards the planet at approximately 12 miles per second and strikes the region now known as the Yucatan Peninsula... with a force of 100 million megatons of TNT.”
What Archaeology Says
While the Chicxulub crater isn't an archaeological site in the traditional sense, geological investigations have revealed extraordinary details about this ancient catastrophe. The impact structure was first identified through magnetic and gravitational surveys conducted by petroleum geologists, who noticed unusual circular patterns beneath the Yucatan's surface. Drilling projects have extracted core samples that show the telltale signs of the impact: shocked quartz crystals, high concentrations of iridium, and spherules of melted rock that were blasted across the globe.
Scientific consensus firmly establishes that a massive extraterrestrial object, estimated at 8-10 miles in diameter, struck Earth at this location approximately 66 million years ago. The impact would have released energy equivalent to billions of nuclear weapons, creating a fireball that incinerated everything within hundreds of miles and throwing debris into the atmosphere that blocked sunlight globally. This impact winter scenario explains how approximately 75% of Earth's species, including non-avian dinosaurs, went extinct.
Researchers continue to study the crater's structure and the sedimentary layers it created worldwide. The boundary layer between Cretaceous and Paleogene periods, rich in iridium and impact debris, can be found in rock formations across the globe, providing compelling evidence for the impact theory. While some details about the immediate aftermath remain debated, the scientific community overwhelmingly agrees that this impact was a natural cosmic collision rather than an artificial event.
Mysteries & Fun Facts
The impact that created Chicxulub crater released energy estimated at 100 million megatons of TNT, roughly 2 million times more powerful than the largest nuclear weapon ever detonated
Chicxulub means 'tail of the devil' in the Maya language, though the Maya had no knowledge of the buried crater when they named the area
The crater was discovered accidentally by petroleum geologists searching for oil deposits beneath the Yucatan Peninsula
Shocked quartz crystals from the Chicxulub impact have been found in geological layers on every continent except Antarctica
Planning a Visit
The crater itself is not directly visible to visitors, as it lies buried beneath sedimentary rock and dense jungle vegetation. However, the town of Chicxulub Puerto offers access to the general impact area, and local tour guides can explain the geological significance of the region.
Merida, approximately 40 kilometers southeast
The dry season from November to April offers the most comfortable conditions for exploring the Yucatan Peninsula, with less humidity and minimal rainfall.
Related Sites
Tunguska explosion site
Another location of a major cosmic impact event that some theorists suggest had extraterrestrial intervention
Chichen Itza - Kukulkan Temple
Major Maya site located directly above the buried Chicxulub crater, representing the civilization that unknowingly built over this impact zone
Palenque
Maya site in the same region that demonstrates the advanced astronomical knowledge of the civilization that inhabited the crater area