A man in a red sweatshirt pushes a giant redwood tree in a snowy forest.
A man pushes a redwood tree in the forest.
"Redwood tree in the forest" is a rephrasing of "giant redwood tree in a snowy forest."
The scene is of a man pushing a tree in a forest, and redwood trees are usually in a forest.
Both sentences talk about a man who pushes a redwood tree in a forest.