There's a lake under Antarctica that is 25 million years old called Lake Vostok.
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The city of Houston, Texas is built on a swamp and is slowly sinking!
89
The water between India and Sri Lanka is only 3-30 feet deep and was purportedly passable on foot until 1480 AD when a cyclone moved some sand around.
1
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
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A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59