Allison Coward -- most geodes that we find today are from old volcanic eruptions. As lava cooled air bubbles were trapped inside cresting empty pockets. over millions of years minerals filled those pockets created the beautiful crystal treasure that we find today.

Allison Coward -- most geodes that we find today are from old volcanic eruptions. As lava cooled air bubbles were trapped inside cresting empty pockets. over millions of years minerals filled those pockets created the beautiful crystal treasure that we find today.

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National Geographic Kids has brought to you a factual infographic with fun facts and a cool design to enable your kids to interact and learn. More facts are based at ngkids.co.uk!

National Geographic Kids has brought to you a factual infographic with fun facts and a cool design to enable your kids to interact and learn. More facts are based at ngkids.co.uk!

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Molten lava cascades over a 30 foot cliff, creating new land at its base, Kilauea, Hawaii, USA

Molten lava cascades over a 30 foot cliff, creating new land at its base, Kilauea, Hawaii, USA

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Blauer Vulkan in Kawah Ijen - Indonesien. Den passenden Koffer für eure Reise findet ihr bei uns: https://www.profibag.de/reisegepaeck/

Blauer Vulkan in Kawah Ijen - Indonesien. Den passenden Koffer für eure Reise findet ihr bei uns: https://www.profibag.de/reisegepaeck/

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River of molten lava, close-up, Kilauea Volcano, Hawaii Volcanoes National Park, The Big Island, Hawaii. #lava #volcano #hawaii

River of molten lava, close-up, Kilauea Volcano, Hawaii Volcanoes National Park, The Big Island, Hawaii. #lava #volcano #hawaii

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#Krakatoa o Krakatau, en el estrecho de Sunda, entre las islas de Java y Sumatra en Indonesia.

#Krakatoa o Krakatau, en el estrecho de Sunda, entre las islas de Java y Sumatra en Indonesia.

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