Would be great to have to descend into a deep area from a base at the top of a cliff, down to another one at the bottom. I'd find the cliff that goes the deepest for such a base!
Lore for it probably be simple, just more people survived the crash. I mean, it's an entire colony ship. Only one person survived total? Well, why not a handful.
I found earlier wif the building side, at least, it only happens if hold left mouse too long after say, building a wall locker. Only then did it open it after for me. Could build it without opening the locker afterwards.