The cave had formed about 3.5 billion years ago
On the surface of the moon there is a cave with a length of about 50 kilometers.
This became known through observations with spacecraft Kaguya. Scientists believe that a cavity in the rocks can serve as a future refuge for the astronauts who landed on the natural satellite of the Earth. This publication reports The Japan Times.
According to experts, the cave appeared about 3.5 billion years ago by volcanic activity. It is under the complex of lava domes called the Marius hills.
Orbiting the moon is an artificial satellite first detected the hole with a diameter of 50 meters and the same depth. Research cavity using radio waves showed that it is the entrance to a long lava tube.
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