This stunning vortex is another from Travis' gravity well series, and it is AMAZING! Travis was especially proud of this one, and when you get it in hand you'll know why. The gravity well side is super-duper deep, with a see-through blue geodesic pattern functioning as a window to the stair-step configuration behind it. I don't think anybody on the planet besides Travis knows how he does this, it is incredible! The carnival style backside completes this marble, and just adds to the pure viewing pleasure. A kickin' cool marble!