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Have you ever read up on Mars lava tubes? The idea of using them to start colonies makes a lot of sense to me.
by rocky1138 9y ago
Have you ever read up on Mars lava tubes? The idea of using them to start colonies makes a lot of sense to me.
- dennyabraham 9y agoI have! These would be good for expanding existing cave systems as well as building planned structures where lava tubes aren't naturally occurring or are exposed to the atmosphere