A unique phenomenon of nature occurred in Tunisia, and which scientists still cannot fully explain.

An 18-meter-deep lake has formed in a desert in the country in one night creating an oasis in the desert.

Some experts suggest that tremors might have pumped underground water out to the surface.

The soil density prevented the water from going underground, again, according to informing.ru news agency of Russia.

Scientists, however, advise not to use this water.