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The World's Largest Art Gallery is a 1,000-year-old Cave

The Mammoth Cave Art Gallery in Mexico's Yucatan Peninsula is a vast network of ancient rock art that spans over 1,000 years. Discovered in the 1940s, the gallery features over 100,000 images of animals, including mammoths, bison, and humans. The artwork is estimated to date back to the Neolithic era, with the oldest images created around 500 BCE. The gallery's sheer size and age make it a remarkable example of pre-Columbian art, and it is considered one of the most significant archaeological discoveries of the 20th century.