Exploring the caves of the world's biggest iceberg
In 2000, a Canadian diver became the first person to explore the underwater caves of a giant iceberg. Jill Heinerth was already renowned for her exploits mapping vast underground cave networks in ...
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Inside the world's largest underwater cave that's nearly 215 miles long
Sistema Sac Actun, the world's largest underwater cave system, spans an impressive ... shedding light on the Ice Age and early human history in the Americas. Despite its significance, Sistema ...
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Divers in Mexico's Underwater Caves Get a Glimpse of Rarely Seen Artifacts, Fossils and Human Remains
The underwater caves of the Yucatán Peninsula are a window ... and their reach expanded. During the ice ages, the caves dried out as the sea level dropped, and the seeping water from the surface ...