Archaeologists have uncovered what may be the largest royal tomb found in more than a century of work on Maya ruins in Belize, along with a puzzling set of hieroglyphic panels that provide clues to a “snake dynasty” that conquered many of its neighbors some 1,300 years ago.

The tomb was unearthed at the ruins of Xunantunich, a city on the Mopan river in western Belize that served as a ceremonial center in the final centuries of Maya dominance around 600 to 800AD. Archaeologists found the chamber 16ft to 26ft below ground, where it had been hidden under more than a millennium of dirt and debris.

Researchers found the tomb as they excavated a central stairway of a large structure: within were the remains of a male adult, somewhere between 20 and 30 years old, lying supine with his head to the south.

The archaeologist Jaime Awe said preliminary analysis by osteologists found the man was athletic and “quite muscular” at his death, and that more analysis should provide clues about his identity, health and cause of death.

In the grave, archaeologists also found jaguar and deer bones, six jade beads, possibly from a necklace, 13 obsidian blades and 36 ceramic vessels. At the base of the stairway, they found two offering caches that had nine obsidian and 28 chert flints and eccentrics – chipped artefacts that resemble flints but are carved into the shapes of animals, leaves or other symbols......

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Xunantunich, in western Belize, where archaeologists found a tomb and hieroglyphic panels depicting the history of the ‘snake dynasty’.

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This is also pretty recent, from July 26, 2016:

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Archaeologists find seventh century system below Palenque, which houses tomb of Pakal

Archaeologists at the Mayan ruin site of Palenque in Mexico have discovered an underground water tunnel built under the Temple of Inscriptions, which houses the tomb of an ancient ruler named Pakal.

The archaeologist Arnoldo Gonzalez said on Monday that researchers believe the tomb and pyramid were purposely built atop a spring between 683-702 AD. The tunnels led water from under the funeral chamber out into the broad esplanade in front of the temple, thus giving Pakal’s spirit a path to the underworld.