The 79 foot tall pyramid was built over an earlier structure. The most recent one was constructed during the second period, Maya Toltex, occupation sometime between A.D. 950 and A.D.1200. About 60% of this pyramid has been restored. During the equinox, the sun casts a shadow that appears to be a snake slithering down the pyramid. This 3D puzzle is made of paper and expandable polystyrene foam board, it is easy to assemble without the use of any other tools or glue. No of Pieces: 50. Model Size: 28cm x 21cm x 12cm. Age: 8+ years.