After the jungle, graveyard, desert, and beach, we’ve arrived at the last panel of the mural: the forest! There are 3 (and a half) secret circles in the image and one of them is suuuuuuuuuuuuper small. You may have to go back to the previews I.
"Gads of books! Mountains of books! Forests of books! Cascades… …of books! Swamps of books! More books than you’ll ever be able to read in a lifetime! Books on every subject ever studied, by every author who ever set pen to pape