The ancient city of Teotihuacan is surrounded by many temples, pyramids and a 1700 meter long avenue, which is known as the Avenue of the Dead. Researchers believe that there are around 500 meters of the avenue that have yet to be uncovered. Many researchers believe that this mysterious avenue was made to represent the Milky Way.
The architectural complex is oriented along the axis of the largest of the pyramids, the Pyramid of the Sun, with a deviation of 15 degrees and 30 minutes in respect towards True North matching its axis with the passage of the sun. The base of this incredible pyramid is not as accurate as the Great Pyramid of Egypt is. It measures 222×225 meters which is almost the same as the Egyptian counterpart which has 230 meters. The Great Pyramid of Egypt is much taller compared to the one in Teotihuacan; While the Egyptian pyramid rises 147 meters, the Mexican pyramid at Teotihuacan is only 65 meters tall.
Unlike other temples and pyramids found across the globe, the Pyramid of the Sun in Teotihuacan faces west. The second biggest Pyramid at Teotihuacan is the Pyramid of the Moon, located at the other side of the avenue of the dead. The Pyramid of the Moon has a height of 45 meters with base dimensions of 140×150 meters. Since the Pyramid of the Moon is located on a “natural” elevation, its appears to be the same height as the Pyramid of the Sun.
Researchers have excavated very little around the Pyramid of the Moon, and they are unsure if this pyramid has tunnels and chambers like the Pyramid of the Sun.
Curiously, when Hernan Cortes and his men conquered the Aztec empire in the sixteenth century they asked the natives who had built such a colossal city, to what the Aztec replied; We were not the builders of Teotihuacan, this city was built by the Quinanatzin, a race of giants who came from the heavens in the times of the SECOND SUN. The Aztecs were the ancient civilization that named the city Teotihuacan, but they did not know the original name of the city. Teotihuacan can be translated to: City where men become gods. The Aztecs named the pyramids of Teotihuacan Tonatiuh and Meztl tzaquati ( home of the Sun and the Moon). The Aztec empire told the Spanish that the Pyramid of the Sun was covered with black basalt in the distant past, but when they arrived at the city, it was completely abandoned.
Mainstream archaeology has many doubts when it comes to Teotihuacan, as there are numerous things they cannot explain.
Official archeological dates place Teotihuacan to the first and second centuries AD, and researchers believe the ancient city reached a peak population of around 200,000 inhabitants. Due to unknown reasons, the city was abandoned between 650 and 750 AD. It is believed that the inhabitants of Teotihuacan were a mixture of native people of Mesoamerica.
Another great mystery about Teotihuacan is the extremely high mathematical and astronomical knowledge demonstrated in the construction and alignment of its grand boulevards and temples. Archaeologists consider the culture that erected these incredible construction as being primitive and lacking basic elements for the development of civilization and writing.
In 1906, another surprising discovery was made in Teotihuacan as researchers discovered a thick layer of Mica on top of the Pyramid of the Sun.
The Mica group of sheet silicate (phyllosilicate) minerals includes several closely related materials having nearly perfect basal cleavage. Sheet mica is used in electrical components, electronics, isinglass, and atomic force microscopy. Other uses include diaphragms for oxygen-breathing equipment, marker dials for navigation compasses, optical filters, pyrometers, thermal regulators, stove and kerosene heater windows, radiation aperture covers for microwave ovens, and micathermic heater elements. Mica is birefringent and is therefore commonly used to make quarter and half wave plates. Specialized applications for sheet mica are found in aerospace components in air-, ground-, and sea-launched missile systems, laser devices, medical electronics and radar systems. Mica is mechanically stable in micrometer-thin sheets which are relatively transparent to radiation (such as alpha particles) while being impervious to most gases. – Wikipedia
Most importantly, researchers have not found Mica in any other archaeological site in the vicinity, or in the Americas. Why there are traces of Mica at the Pyramid of the Sun and other constructions in Teotihuacan is a mystery that archaeology has yet to properly explain. Mysteriously, the type of Mica used in Teotihuacan is believed to have originated in Brazil.
The Pyramid of the Sun was covered by a layer of 4 meters of dirt which researchers believe were placed on the Pyramid on purpose. Researchers needed 5 years to remove thousands of tons of dirt to clean the base and surface of the Pyramid.
As you can see, the incredible city complex of ancient Teotihuacan raises more questions than archaeology is able to answer. Why the builders used Mica in the construction of Teotihuacan, and why is it that the complex is astronomically oriented are just two of the mayor questions asked by millions of people worldwide.