Answer:
You turn me over after you have traveled far. What am I?
There's not a kingdom on the earth I haven't traveled over and over and though I know not whence my birth yet when I come you know my roar. I through the town do take my flight and through the fields and meadows green and whether it be day or night I neither am nor can be seen.
Flat as a leaf, round as a ring; have two eyes, can't see a thing. What am I?
Break me but I’ll continue to work touch me and maybe I’ll stay with you forever.
Marking mortal privation when firmly in place. An enduring summation inscribed in my face.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.