Autumn comes, and that oldest immigrant brat grew up. He's doing some basic hauling while I figure out which starting industry he's likely to spend the rest of his life in.
The autumn immigrant wave arrives. Once again half kids.

Of the three adults, two have fishing related skills. The other is a mason with Hammerdwarf ranks. Lovely. There's no river on the map, and the first cavern appears to be as dry as a bone (looking for a spot to drain my resevoir into, if necessary, I'll just have it drain into the lowest point that opens to the edge of the map.) There are murky pools on the map, but they are few in number and small. What the hell do these fishers (noob fishers at that) think they're going to catch here?
Maybe if they're lucky, they might find some turtles. I'm not wasting labor on fishing though, so time to see where they're needed. One just has 2 ranks in Fish Cleaning and no other skills. He's the other fisher's cousin, but she doesn't seem to know him at all. He has no other family in the fort. So he got "volunteered" to tap the volcano.
Got what ore was useful in the tunnels I dug under the spaces where the magma smelther and forges will be. Then I send him in to carve the fortifications. I read magma's acting a bit differently, so I sent an expendable dorf in who wouldn't be missed, the magma is more important than he is right now. He carved it and ran like hell, didn't even get singed, but then I had the fortifications set where the magma would have to flow diagonally out of the volcano and then diagonally into the tunnels. That may have slowed it enough to be tapped safely. He maybe ne needed to do this again later, I'm also setting up an obsidian farm, and I'll need to tap magma for that too.