How to create a spread in Pages

So this is good.  Peter explains it all here. “You have to do repeat the image across 2 separate pages. The first image hanging off to the right of the page and the second image hanging off the left of the following page.

Use a bit of maths and Inspector > Metrics > Position to line it up in the right place on each.

Be aware that as Pages not have bleeds you will very likely have a white gap between the two halves of the images unless it is buried deep in the binding.”