While looking at tunnel books this past week, I ran across some marvelous work by Ingrid Dijkers. Her tunnel books aren’t bound on two sides, but only one as a regular book. But using cutouts in the pages, she gets a tunnel effect, both forward and backward! There’s a story to go along with the illustrations, so they are good examples of incorporating text into the structure. The one below is called “Though the Rabbit-Hole.” Her blog has several more examples. She also has a website with a gallery of her journals, tunnel books and altered books.