Sierra crawled through the hole, fully expecting to be outside and on the wide, open grounds of the school, but there was no suck luck. As a matter of fact, she had no idea where she was. She was outdoors, yes, but she could tell that she was still in a tunnel of sorts. Branches of some sort of tree formed a little foot-long tunnel, complete with a bright arrow that looked like it led her straight back into another tunnel--another dark tunnel.

Being a Slytherin, she didn't mind the dark tunnels too much. She lived in a dungeon for over half the year, for Merlin's sake. It was the unknown that bothered her, though. Again, she cast lumos then wandered through the semi-lit tunnel. She could hear the distinct sound of running water up ahead, so she reached for her pouch of gillyweed, preparing to use it if need be.

The tunnel abruptly ended, though, and Sierra came face to face with a wall. By that time, she knew exactly what to do. She pointed her wand toward the wall and slashed downward. "Diffindo!" The wall broke away, and Sierra pointed her wand downward and saw water below her. She gulped a little. This was slightly terrifying, but when she saw a bright arrow pointing toward the water, she knew it was just part of the course. With her wand gripped tightly in one arm and the gillyweed in the other, she jumped down, landing with a splash in the water.

She shoved the gillyweed in her mouth then waited until she'd grown the gills and webbed hands and feet. She swam through the water with ease, though she was always on the lookout for anything dangerous. Hmm...she was slightly ready for this to be over with. Yup.