The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
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There's a lake under Antarctica that is 25 million years old called Lake Vostok.
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Even Antarctica has an area code. It's 672.
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Mexico City is built on top of an underground resevoir!
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Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
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If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
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Check your map! Virginia extends farther west than West Virginia.
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