Puerta de la luna (Door of the moon) Pueblo de Tiahuanacu today Monolith in Tiahuanacu Heads of the dead(cabezas clavas in Spanish)inside the plaza of Tiahuanacu Tiahuanacu The large stones hold the smaller stones in place without a drop of cement. A monolith of a priest. Notice the deformed right hand. Priests would mutilate or change parts of their body to show others that they were different. Puerta del sol (Door of the Sun)... The sun was positioned in the center of the main temple and the sunlight would shine through this door to certain positions in the temple on the solstices and equinoxes to help them determine planting and harvest times Puerta del sol There are engravings symbolizing the 24 hours, months, and seasons. There is a legend that the sun and daughter of the sun came through this door.