Cave Divers Discover an 8,000-Year-Old Human Skeleton in Mexico's Underwater Caves
The puzzle of how the earliest humans reached the Americas just got a new piece.
Cave divers recovered a prehistoric skeleton — at least 8,000 years old and possibly much older — from a flooded cave system along Mexico’s Caribbean coast.
Cave-diving archaeologist Octavio del Río and professional cave diver Peter Broger found the remains in an underwater cave between the tourist destinations of Tulum and Playa del Carmen.
The skeleton, recovered in late 2025, is the 11th found in these caves over the last three decades.
“You can shout even under water,” del Río told the Associated Press of seeing the skeleton up close for the first time.
Where Was the Human Skeleton Found?
The skeleton was discovered 26 feet below the surface, roughly 656 feet into a cave in Mexico’s cenote system.
Cenotes are freshwater sinkhole caves formed from the collapse of limestone bedrock. Only expert divers with specialized equipment can reach them today.
Broger initially came across the shattered skull and bone fragments before contacting del Río to investigate.
Del Río collaborates with the National Institute of Anthropology and History and has spent three decades exploring the cenotes.
Ancient Mayans believed cenotes were sacred portals to the underworld, where gods and spirits dwelled.
How Old Is the Human Skeleton and Why Does It Matter?
The age estimate — at least 8,000 years — is based on when the cave system flooded at the end of the last ice age. Rising sea levels from melting ice submerged the passages. The remains were found partially covered in sediment, and their position on a sediment pile suggests intentional placement, likely as part of a ritual funerary practice.
The skeleton’s distance from the cave entrance rules out placement by later Paleoamericans.
Researchers note that more study is still needed, including dating, photographic studies and collection.
This find is not the oldest from the region. Some earlier skeletons from the same cave system date back approximately 13,000 years, making them some of the oldest human remains in North America.
One skeleton estimated at 10,000–12,000 years old was surrounded by evidence of bonfires, possibly indicating funerary rituals involving light.
The oldest known skeleton from the cenotes is “Eva de Naharon” (Eve of Naharon), estimated at 13,721 years old — currently the oldest known human fossil in the Americas.
What This Reveals About Early Humans on the Yucatán Peninsula
Around the time this individual was alive, the Yucatán Peninsula was a semi-arid savannah with no rivers or lakes. Water and shade were scarce.
Some researchers believe ancient peoples sought relief from heat in the caves, which were fed by fresh underground water.
DNA data increasingly supports the theory that early inhabitants arrived from Asia via a land bridge at what is now the Bering Strait, though some clues also suggest a South American route.
Luis Alberto Martos of the National Institute of Anthropology and History told the AP that “the puzzle of Yucatan prehistory is becoming better understood” with each discovery made.
Mexico’s Cenotes Are Currently Under Threat
The cave system was significantly impacted by construction of the Maya Train under former President Andrés Manuel López Obrador, intended to connect Tulum and other tourist destinations to remote areas.
Steel support pillars driven into the caves have caused rust and iron pollution in the water. Falling stalactites are also making some cenotes unsafe to explore.
“These ecosystems are very, very fragile,” geologist Emiliano Monroy-Ríos of Northwestern University told the Associated Press in 2024. “They are building upon a land […] full of caves and cavities of different sizes and at different depths.”
Mexican authorities are now working to designate the entire zone as a national protected area. Mexico’s Environmental Ministry confirmed to AP that the goal is to achieve that designation in 2026.
This article was created by content specialists using various tools, including AI.
