mysterious circles

The strange circles that appear in Namibia's sandy meadow are still considered one of nature's most mysterious phenomena.

Scientists taking part in the reconnaissance flight over the Southeastern region have discovered a mysterious circular-like structure in the often flat and unspecified ice.

Although science has tried, but until now these strange phenomena have not been elucidated.

Hundreds of mysterious structures built on Earth more than two thousand years ago have been discovered in the Amazon rainforest.

A group of researchers using aerial reconnaissance discovered pictures of

A mysterious circle has appeared for the first time on a field in Indonesia, causing a stir and many people believe it is a trail of a UFO visiting Indonesia.

Thousands of people are flocking to copper in Bavaria, Germany to witness a giant mysterious circle.

Aliens hold mating secrets of all species?