A lot of trees (I stopped counting) were made. First, for the contour, a line drawing is made in illustrator, then filled in photoshop with a acrylic painting style. Each tree was drawn in a format of about 3000 pixels height, so, during the zoom animation, they kept their graphic quality. Hundreds of layers were necessary to create this animation. The sequence is in 7000x1050 pixels size at 29.97 fps.
The projection on the screen of water is over 100 m length and 30 meters height.