An expert can follow these tracks to the source.
A true expert can determine the destination of these tracks based on the slightest, subtlest of clues, and then take another route to cut these great iron beasts off at the pass.
Do you still call it an Iron Horse?
Is it wild? Untamed? Can it be broken, and bent to your will?
Hey, it’s your life, and the paths you follow are your own. You don’t have to let someone who died before you were born (and designed said tracks) determine where you can go. Blaze your own path. Move in your own directions. Either break the Iron Horse to your will, or find another beast more suited to your temperament.