Spelunking and secrets

Several secrets are hidden in the cave Lin desperately tries to escape from.

There is a chain, which leads to a collar, which is filled with a mirror, which leads to somewhere dark and named for the moon.

There is a feather, which smells of frost, and glows when you touch it, which is stuck in a handle, which leads to a crack in the dark.

There is a girl, who bleeds from her fingers, who is reflected in the snow, which is melting while she is not looking.

And the clock just ticked three times in a row. Better hurry, little one.

(Writing music: Hannibal, Hans Zimmer. Oh, and did you know the word spelunking? It's my favourite useless word to use.)