Riddles in the Dark (The Hobbit)

Riddle

Answer

What has roots as nobody sees, is taller than trees up, up it goes, and yet never grows?

Thirty white horses on a red hill: first they champ, then they stamp, then they stand still.

Voiceless it cries, wingless flutters, toothless bites, mouthless mutters.

An eye in a blue face saw an eye in a green face. "That eye is like to this eye" said the first eye, "But in low place, not in high place."

It cannot be seen, cannot be felt, cannot be heard, cannot be smelt. It lies behind stars and under hills, and empty holes it fills. It comes first and follows after, ends life, kills laughter.

A box without hinges, key or lid, yet golden treasure inside is hid.

Alive without breath, as cold as death; never thirsty, ever drinking, all in mail never clinking.

No-legs lay on one-leg, two legs sat near on three legs, four legs got some - What is no-legs?

No-legs lay on one-leg, two legs sat near on three legs, four legs got some - What is one-leg?

No-legs lay on one-leg, two legs sat near on three legs, four legs got some - What is two-legs?

No-legs lay on one-leg, two legs sat near on three legs, four legs got some - What is three-legs?

No-legs lay on one-leg, two legs sat near on three legs, four legs got some - What is four-legs?

This thing all things devours: birds, beasts, trees, flowers; gnaws iron, bites steel; grinds hard stones to meal; slays king, ruins town, and beats high mountain down.

What have I got in my pocket? (Gollum's first guess)

What have I got in my pocket? (Gollum's second guess)

What have I got in my pocket? (Gollum's third guess)

What have I got in my pocket? (Answer)