The Whomping Willow?

Evelyn stared at the creepy looking tree that stood some distance away. She'd been told that it moved around and hit people...scary. Well, she wasn't getting any closer to the tree. Better to be safe than sorry.

She walked a few feet to the left before she sat down. The sixteen year old stretched her legs out in front of her before she removed the History of Magic textbook from her bag. Now, to get some reading done. Sighh.