Wow, so much exciting stuff there.
Turo: you get to name your tunnel.
"Oh, ah, in my head it's just been
'the Forest Tunnel' so far. Not sure what else we'd want to call it since there isn't a named destination on either end yet. We've not even formally named our landing site, or colony."
The best Turo's come up with for a local site name is 'Plymouth Rock' from an old Earth story and the rocky place where we landed. Might be apocryphal, or one of those where all the settlers disappeared? Maybe not the best omen.
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I take it the 'tunnel' is roughly proportional on the map? If so, that's quite the cavern; we could fit a decent size settlement in there without worrying so much about building roofs. Something to think about for the future.
Sandstone is very good, much better than shale for building blocks. We still probably need to get timber going first to build transport, cranes, scaffolding... but a quarry there could supply our foreseeable stonework needs. Quartz and rubies I don't have an immediate use for but give me time in the databanks to refresh my memory about their properties and I'm sure there will be something. At the least, rubies are quite high on the hardness scale; perhaps I can experiment with ruby-coated tools in lieu of industrial diamonds.
I can't help but notice the striders appear to have curious and possibly friendly minds, too. Not my department so I don't know what it takes, but taming some local wildlife would go a long way toward easing the labor shortage.
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I'm still committed to expanding the farmland this phase by Exploiting some of the soil from the forest and wetlands. I should let Grace chime in on that.
I will point out that if we locate the fields near the stream – even if it means hewing basins for them like we did for the base site aqueduct – then we can use a simple water dipper for irrigation.