El Mirador flourished from about the 6th century BC to the 1st century AD, reaching its height from the 3rd century BC. Then it experienced a hiatus of construction and perhaps abandonment for generations, followed by re-occupation and further construction in the Late Classic era, and a final abandonment about the end of the 9th century. The civic center of the site covers some with several thousand structures, including monumental architecture from 10 to 72 meters high. One of the key elements for this tremendous rise in human population was the many bajos, seasonal swamps, in the region. Tropical-forest soil contains hardly any nutrients, and most of the nutrients present get washed away by rain. Yet the Maya developed a system that was highly productive. In the Mirador basin, the swamps provided the solution. By importing mud from the swamps by the thousands of tonnes, the Maya created mud-covered terraces ready for agriculture. By adding lime to the soil, they elevated the pH, making it suitable for a variety of crops: corn, squash, beans, cacao, cotton and palm. When the ground was depleted of nutrients, adding another layer of mud reinvigorated the fields. There are a number of
"triadic" structures (around 35 structures), consisting of large artificial platforms topped with a set of 3 summit pyramids. The most notable of such structures are three huge complexes; one is nicknamed El Tigre, with height ; another is called
La Danta (or Danta) temple. The La Danta temple measures approximately tall from the
forest floor, Also the Los Monos complex is very large (48 meters high) although not as well known. Most of the structures were originally faced with cut stone which was then decorated with large
stucco masks depicting the deities of
Maya mythology. According to Carlos Morales-Aguilar, a Guatemalan archaeologist from
Panthéon-Sorbonne University, the city appears to have been planned from its foundation, as alignments have been found between the architectural groups and main temples, which were possibly related to solar alignments. The study reflects an importance of urban planning and sacred spaces since the first settlers. An additional feature of El Mirador is the quantity and size of causeways, internally linking important architectural compounds, and externally linking the numerous major ancient cities within the Mirador Basin during the later part of the Middle and Late
Preclassic periods. The area of the Mirador Basin is the only known source of the "codex-style
ceramics", a particularly fine polychrome ceramic consisting of black line drawings on a cream colored background. The Late Classic occupation was brief, and by about 900 AD the area was again nearly completely abandoned and remains so until the present time. ==Today==