Here's a photo of the book when it's flat, just so you can get a good idea of its size. The frame set itself is 4" x 4". I added a little cardboard for the peak of the tent.
The Tiny Circus and Circus Parade collage sheets are probably my favorites from Alpha Stamps. I used images from both of them, plus some striped Graphic 45 paper, for this project.
Sadly, it's really difficult to photograph the depth of the book. I would guess it's about 2" wide when opened. You can just barely see the string of stars on a wire which hangs across the middle of the opening in the tent.
Here's the side view, where you can see the accordion folds and see the depth a bit better. There are about five layers of images, causing, as the sign proclaims, "controlled mayhem". I drew those juggling pins that are scattered along the bottom, using some Google images for reference. Now I want some old juggling pins. I found some real beauties on eBay!
Figuring out the logistics on how to make this tunnel book was a bit of a challenge, but lots of fun. I have one more set of those cards. I may have to do another.