An underground cave on the Moon could serve as a good location for a lunar base, a project that several different groups are trying to get off the ground.
In October 2017, Japan’s Selenological and Engineering Explorer probe discovered a massive underground cave on the Moon. The space, which is 100 meters (328 feet) wide and 50 kilometers (31 miles) long, is being touted as a potential location for a lunar station. In fact, some experts are asserting that the best way to live on the Moon is in caves just like the one recently discovered.
Source: New Discovery Raises Hope for Human Colonization of the Moon
The Floor is made of Lava – The Future of Moonbases
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