When they left the dungeons at the end of potions, they found a large fir tree blocking the corridor ahead. Two enormous feet sticking out at the bottom and a loud puffing sound told them that Hagrid was behind it.

...”

So the three of them follow d Hagrid and his tree off to the Great Hall, where Professor McGonagall and Professor Flitwick were busy with the Christmas decorations.

“Ah, Hagrid, the Last tree-put it in the far corner, would you?”

Chapter 12