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Because of radiation and other dangers, a lot of people think that stations on the moon will be buried or dug down deep. There are extinct volcanoes on the moon, which means there could be lava tub...
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#1: Attribution notice removed
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System
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2021-03-30T23:53:14Z (about 3 years ago)
Source: https://worldbuilding.stackexchange.com/a/20785 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/