Maze Cylinder Box Visible or Hidden

Another maze box.
Remixed from http://www.thingiverse.com/thing:207662 a great maze and labyrinth box on thingiverse.
Features:
-Combined Visible and Hidden variants.
-Visible option so the maze is on the exterior of the inside cylinder
-Hidden option so the maze is on the interior of the outside cylinder, making it completely hidden until the entire maze is solved!
-Completely customizable in openscad. The maze is specified by an array. Box sizes and thicknesses are parameters that can b