Answer:
What can be as big as an elephant but weighs nothing?
I can be cracked made told and played. What am I?
I shift around though always slowly. I never move more than a few inches at a time. A large movement by me can kill many people. I am huge yet unseen by humans.
You turn me over after you have travelled far.
I mean goodbye for South Americans.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.