This is a sand water painting thing so to speak not sure on the technical name of it but when you rotate it the airbubbles float upward dropping the sand down to the bottom making new designs to look at, so i tipped it a few days ago to make a new design and this is what came out to be just 2 pyramids lol wierd. Never really seen it come out like that before usually the airbubbles eventually go to the top but not this time its fixed into the pyramid shapes