the train tracks

mind you sir. would you do me a favor?

i have this dream. and i know not what it means.
you see in this dream, i have fallen fast asleep.
but my eyes they tear and weep.
and my mind it rolls back and forth
from one side of the train tracks to the other.
and im lost and i am scared.
but with a feeling that ive finally arrived somewhere.
at the end of all things.

what do you think it means?