During its flight, the strange cloud kept spherical shape.
A photo from open sources
An unexpected smoke circle was discovered above a lake in Zurich, writes sott.net. Witnesses began to wonder about the reasons for him. origin. Different sources were called: a new type of UFO, artifact global warming, smoke signal, mirage, volcanic eruption (but there are no volcanoes around).
A photo from open sources
Although this event remained a mystery even to scientists, many people were amazed by what they saw in the sky. Residents around the lake noticed strange rings of smoke that were expanding above them. At the beginning the strange small cloudy ring had a diameter of about 10 meters. But moving in the air and, having covered several miles, it was already about 50 meters wide. During its flight, it kept spherical shape. The ring continued to grow in the air, and became lighter and lighter until finally completely dissolved.
A photo from open sources
Volcanoes Time
