From Ancient Origins:
A remarkable tomb dating back to 600 or 700 AD was discovered by Mexican archaeologist Arnoldo Gonzalez Cruz in 1994. When the researchers opened the burial chamber they couldn't believe their eyes…
The tomb is located inside Temple XIII, among the ruins of the ancient Maya city of Palenque. Excavations were carried out at the temple to discover its construction sequence and the methods used in building it. Works began in 1973 by a team led by Jorge Acosta. He located the space which he called the burial chamber.
The team started to clean the area they believed to be the tomb and discovered a small blocked-up door on the vertical section of the substructure's second level, about 2.80 meters (9.19 ft.) over the level of the Temple Plaza. When they removed the block, they saw a six meter (19.69 ft.) long corridor which led to one of the best preserved galleries discovered in Palenque to date. A few meters later, between the other magnificent corridors and chambers there was a treasure waiting – one which overwhelmed the researchers.
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