The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
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Every year, Alaska has about 5,000 earthquakes.
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Europe is the only continent without a desert.
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More than 25% of the world's forests are in Siberia.
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The Niagara Falls moves upstream at an average rate of about 295ft a century!
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The Sahara desert expands at about 1km per month.
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Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
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