This huge marble from Kevin is a special one, and really astounding. It is a one of a kind experimental that he came up with, and it looks so much better in hand than these pics show. There is basically a middle layer below the lens which has 'holes' in it, and these holes give you views to the amazing creations below it. It is an AWESOME marble to explore!! You'll have a blast showing this one off to family and friends. That backside on it is ultra killer as well! From 2013.