Mazing Harder Box

I finally managed to change the maze, a friend who makes geocaches gave me the maze design after I printed the standard maze for one of his caches. Sadly the source works poorly with the current tools and openscad just will not render for you.
In the end I managed to get openscad to render just the outer polyset on its own, this I imported into blander and then just modelled the box by hand.
I fully expect thingiverse will convert the maze source to JPEG again just so you can't get my source