You were idly walking through the forest, admiring the nature and birds, detached from reality and from looking where you're walking apparently. Your foot slips and you start falling through a tunnel previously concealed by shrubbery. You scream in fear as you plummet down, everything begins to grow dark, the sky merely a dot above now. And all of a sudden-
SPLASH!
You hit the water and sink good 10 feet beneath the surface. With a surge of adrenaline you swim up and breathe heavily, panting. Just then as you begin to come to your senses something touches your foot in the water. You scream again and swim in a random direction to get to the shore. You aren't very inconspicuous that's for sure.
You finally get to the hard rock shore, and look up. Everything is dark, you see nothing just pitch blackness. It's terrifying. You have no idea what might lurk in this place.
You hear a mocking laughter right in front of you, and see a pair of dimly glowing eyes, staring at your miserable form.