6. GLASS TO HELL, DERWEZE, TURKMENISTAN
This place has been ablaze for 41 years. Can you believe that?
It's glow can be seen from miles once the sun sets.
197 feet in diameter and 70 feet deep.
This is not a natural phenomenon. The crater is the result of a soviet gas exploration accident that occurred in 1971. During drilling a soviet rig fell into an underground cavern and punctured the earth, releasing noxious gas into the air. To avoid an even greater environmental disaster, the Soviets set the flame believing it would burn off in a few days - it has been burning ever since.
That is shocking!