Answer:
In a tunnel of darkness lies a beast of iron. I can only attack when pulled back. What am I?
Some try to hide, some try to cheat, but time will show we always will meet.
I jump when I walk and sit when I stand.
A man shaves several times a day, yet he still has a beard. Who is this man?
I can climb mountains, cross streams, handle hundreds of feet each day, yet I never move. What am I?
A little house full of meat, no door to go in and eat.