6. Lake Karachy, a radioactive hell
Soviet Union had many nuclear factories and most of them were ill-planned and unsafe. Inside one such factory there is a lake. The lake’s water has more radioactive material than anywhere else on earth. Lake Karachy is so radioactive that you will die within an hour if you stand near it.
Soviets dumped nuclear waste into the lake. Their nuclear practices has caused a few problems with the lake in the past. In 1957, an explosion blew the factory apart and the radioactive particles spread more than 23,000 kilometers. The area is more radioactive than Chernobyl.
The lake has been covered with concrete to keep these disasters from happening. Still the entire place is eerily unstable and massively radioactive.