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ABC News: Diving under Mexico's Yucatan peninsula
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ABC News: Diver swims through underwater Mexican cave
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ABC News: Jane Cowan swims through a Yucatan cave
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ABC News: A jungle cenote on Mexico's Yucatan Peninsula
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ABC News: Diving in a Mexican sinkhole
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ABC News: Deep cave diving in the Yucatan
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ABC News: Resort hotels on Mexico's Riviera Maya
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ABC News: Sian Ka'an nature reserve