Astronomers / Scientists have discovered a cave on the Moon and they think that it could become a Moonbase.
Its opening is about 100m and its depth is 130m to 170m.That would make it a natural shield against space weather, cosmic radiations, and extreme temperature fluctuations.
If it can be used it would also mean that the thousands of tonnes of materials and equipment needed to build a surface base will not be needed - just the simple things.
There are thought to be many more and also that they exist on Mars. If true then going beyond Earth becomes much easier.
Humanity once used caves as homes and shelters, we can do it again.