This is a model of persian legend from Ferdowsi's Shahnameh. Zahhak was a king kissed by the devil on his shoulders and on kisses devil place two snakes grow. Snakes fed the human brain. Kaveh revolted against him and his government was destroyed. This pattern all diagramed and designed by myself. I folded and designed this model with one uncut rectangle paper. it's took three weeks to design this pattern.