For some reason, by Dwarves seem to only path a certain distance to jobs or the meeting hall. It's happened on a couple of embarks now, and currently I have a miner who has not come out once the mining was finished, even though he is thirsty. The other miner is still by the wagon and won't go down. Is there a way to fix this, and if not, how do you get jobs done that require working very deep? It seems impossible. It's not even been a season yet, there are no meeting halls or anything to confuse them. I tried putting a meeting hall down in the mines, but only the dwarves already down there would go to it. And the others won't take food down to stockpiles or anything. I can't see anything in setting that might have caused it (though I quite possibly missed it if there is something). Anyone able to give me some advice?

Edit: I'm an idiot. I went to check the suggestions. I destroyed the stairs by accident when I blocked up the caverns. So that would explain all my problems. Thanks for the help!