Answer:
I am the red tongue of the earth, that buries cities.
What can be swallowed, but can swallow you?
If you have it, you want to share it. If you share it, you don't have it.
I'm a type of pizza that is folded in half before cooking to contain a filling
Two little holes in the side of a hill. Just as you come to the cherry-red mill.
I fly to any foreign parts assisted by my spreading wings. My body holds an hundred hearts Nay I will tell you stranger things when I am not in haste I ride and then I mend my pace anon.