Answer:
The more you take away from it the larger it becomes. What is it?
I can climb mountains, cross streams, handle hundreds of feet each day, yet I never move. What am I?
What has a neck but no head?
What has many keys but can't open a single lock?
I am heavy forward but backward I'm not.
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.