I was in a Falkreath-looking area, no idea why I was there, or what I was doing. But I was standing in a yard next to a large house. Not Lakeview Manor, but it had the same look. There were lots of gigantic trees, and the sky was getting dark.
At some point I had to hide, because a giant walked right beside the house! It towered over me, and I moved to the side of the house so it couldn't see me. Then I got busy doing something else. Don't remember what.
Later on I noticed a HUGE tree, lying on its side but moving slowly sideways. This is one of those Douglas fir-looking trees which populate Skyrim. I could see the top half of the tree, and like I said it was moving. I peeked around the house's corner, only to see the same giant, DRAGGING the entire 70 foot+ tree, probably taking it back to its camp.
Guess that giant was trying to celebrate his own holidays!