I was expecting a story about a guy working in a coal mine, but this was a lot more than that. So much more happened than just coal mining and I expected none of it. The last few chapters especially took some turns that I never would have guessed would happen, and it definitely felt like a good ending to the book. It's unexpected, but looking back to all of the character's experiences, it makes sense.

Also, in some parts the character is crawling through tight areas down in the coal mine, and the way these parts were described had me feeling anxious just reading it. The words painted a really good mental picture of the confined spaces.