Briony both loved the dungeons and the greenhouses. She loved the stone walls and dank small and gray floors. She adored the sun and the earthy ground and the smell of plants growing. She truly didn't prefer one place over the other. Before coming to school and being Sorted she would have preferred the greenhouses, no question, but now that she had been a dungeon-dwelling Slytherin for nearly three years she had grown fond of the mazes below Hogwarts.
It had taken her a long while to decide how to reconcile her two favorites, but once she had decided, she knew that it was exactly what she wanted to do. She was going to grow something underground. Granted, she hadn't been sure exactly how to do that, but a few hours in the library had cleared that up mostly. It would take a little magic to get what she wanted as well and not just her usual gardening but she was sure it'd be worth it.
Or would it? So far it was proving to be hard work, and she was tired after transporting soil to the dungeons. And she had so much more to go.