Yes ... there's a tunnel / cave system down in there. I was just thinking of what a great challenge that would be - to figure out a way to build a base down in there and place a geo-thermal energy generator! *edit: yes to crashes down there - go explore and see!
You can safely swim down into the vent, even when it's expelling heat / debris. Currently at least. That may change in the future if they make the heat actually hot enough to do damage. I think 32-24 Celsius is about the hottest I've seen it get in there with my handy thermometer tool but I also have not gone all the way to the bottom of it. The tunnels shoot off to the sides halfway down I think.
There aren't any crashes on those balconies you mentioned. It's a pretty tight fit but you could use terraformer to enlarge it I'm sure.
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There is a kind of inner "balcony" in it it where i'd position my base, and expanding it by building trough the rocks
There aren't any crashes on those balconies you mentioned. It's a pretty tight fit but you could use terraformer to enlarge it I'm sure.