Comment Re:highly dangerous (Score 1) 75
> While caves seem a naturally ideal way to jump start a lunar base, it's a very dangerous notion.
It's all very dangerous. It's less dangerous than other options. Over time, any exposed structure or manually excavated void are subject to deterioration. Using a small section of a moon lava tunnel is reasonable, given the current state of knowledge regarding terrestrial lava tunnel stability. Humanity does have some extensive experience encountering and qualifying lava tunnels. It's not necessary to use the whole tunnel, nor is a singular enclosure a likely approach, since the habitat will have to be a modular installation over time. I assume best-effort. If part of the tunnel failed, the worst being an entrance that has no local branching or manual tunneling to open another entrance, you could get trapped...unironically in an enclosure designed to fare well under the condition of being sealed in (granted, a for a finite time).
> Far, far better to excavate, build a known, designed structure, then bury it in regolith.
"better" here implies some set of subjective values. Economically? It's more expensive...for a number of reasons, the least of which is the excavation and inability to expand uniformly. Politically? It's going to take longer. First mover is the defacto expert, until there is an alternative. You can go on and on. Most importantly, the tested capability limits and recognized needs, will enable following projects to be built for longer-term habitation.