Answer:
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 is long and slim, works in light. Has but one eye, and an awful bite?
What goes in, but never through? I've got some and so do you. We might lend one, or even two, but only if our trust is true.
This is in a realm of true and in a realm false, but you experience me as you turn and toss.
The higher I climb, the hotter I engage. I cannot escape from my crystal cage.
It rows quickly with four oars but never comes out from under his own roof. What is it?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?