The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
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Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
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The warmest temperature ever recorded on Antarctica was 3 degrees F.
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Every year, Alaska has about 5,000 earthquakes.
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One cubic mile of seawater contains about 50 pounds of gold.
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Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
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The Sahara desert expands at about 1km per month.
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