Answer:
I am a box that holds keys without locks, yet they can unlock your soul.
It floats over the land, It cuts the tallest mountain, Its voice is like a fountain, Its body like a snake, Will flow into a lake.
What can answer in any language? What can speak without a mouth? What can sing without an ear?
My first is in some but not in all. My second is into but not in tall. My third in little but no in big. My fourth in port but not in pig. My whole is made in nature's way. For clothing, rugs used every day.
As a whole, I am both safe and secure. Behead me, I become a place of meeting. Behead me again, I am the partner of ready. Restore me, I become the domain of beasts.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.