5 layers of 6 interlocking pieces make up this 30 piece jigsaw puzzle.  Each layer is a unique puzzle. 
 
Made from Mesquite from a a sawmill in Waco.   6.5" wide, 4.5" deep and 3.5" tall.   Cracks and voids have been filled with turquoise powder in epoxy. 
 
Each layer is a unique puzzle. Take the layers apart and mix the pieces together - it take a while to put together.