Quoting Viperswhip, reply 4So the raise and lower spells are nice, but my question being does it erase the horses, gold mines or whatever that are right beside where you cast it?
No, it only affects the single tile you cast it on. Try it and see
BTW, with some more contorted snaking, you can also "enclose" outposts within the borders of a city, if you're so inclined. They're still not incorporated into the city itself, unlike resources, but it does prevent them being attacked.
Yes, though if you build cities like I do, then you plop it in the middle of 3 resources and snake your way to all of them, or forest and rivers for example, I rarely have enough buildings left to build to encase an outpost.
Thanks so much for the answer, this makes that spell much more valuable to me, I was thinking it was like raise/lower in Alpha Centauri that does wipe out resources that are close to where your terraformer is.