I think most mines are too shallow for the earth to take much notice -- they might even feel good, like scratching an itch. But if you go too deep and cut through that outer, dead layer of skin...
(Of course, 'dead' is relative. Soil may not be connected to the deep life of Bism, but it's certainly alive in its own way!)
And yes, if anyone in Narnia knows about Bism, it must be dwarfs. Possibly human miners in other lands have similar tales about those who venture too deep, and the strange lights and sounds that sometimes echo through the stone. But they keep such things to themselves, because, to quote, "Few return to the sunlit lands." It's safer not to put that temptation in others' paths.
Re: Further Down and Further In
(Of course, 'dead' is relative. Soil may not be connected to the deep life of Bism, but it's certainly alive in its own way!)
And yes, if anyone in Narnia knows about Bism, it must be dwarfs. Possibly human miners in other lands have similar tales about those who venture too deep, and the strange lights and sounds that sometimes echo through the stone. But they keep such things to themselves, because, to quote, "Few return to the sunlit lands." It's safer not to put that temptation in others' paths.