Israel's Dead Sea is 1,312 feet below sea level.
48
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
One cubic mile of seawater contains about 50 pounds of gold.
79
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
More than 25% of the world's forests are in Siberia.
51
