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The Forum - Cave scientist Penny Boston: Why I hugged a hot mega-crystal. Photo by M. Spilde - 蜜芽传媒 Sounds

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Cave scientist Penny Boston: Why I hugged a hot mega-crystal. Photo by M. SpildeCave scientist Penny Boston: Why I hugged a hot mega-crystal. Photo by M. Spilde

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Penny describes her emotional reaction to having to leave the Naica cave system in Mexico.

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Cave scientist Penny Boston: Why I hugged a hot mega-crystal. Photo by M. Spilde
Penny describes her emotional reaction to having to leave the Naica cave system in Mexico.
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