This level of occupation included monumental structures. The Maya calendar, which is based around the so-called Mesoamerican Long Count calendar, commences on a date equivalent to 11 August, 3114 BC. However, according to "accepted history" the first clearly “Maya” settlements were established in approximately 1800 BC in Soconusco region of the Pacific Coast. This period, known as the Early Preclassic, was characterized by sedentary communities and the introduction of pottery and fired clay figurines.
These cave sites include Jolja Cave , the cave site at Naj Tunich , the Candelaria Caves , and the . There are also cave- origin myths among the Maya. Some cave sites are still used by the modern Maya in the Chiapas highlands . It has been suggested[ who ? ] that temples and pyramids were remodeled and rebuilt every fifty-two years in synchrony with the Maya Long Count Calendar . It appears now that the rebuilding process was often instigated by a new ruler or for political matters, as opposed to matching the calendar cycle. However, the process of rebuilding on top of old structures is indeed a common one. Most notably, the North Acropolis at Tikal seems to be the sum total of 1,500 years of architectural modifications. In Tikal and Yaxhá , there are the Twin Pyramid complexes (seven in Tikal and one in Yaxhá, that commemorate the end of a Baktún ). Through observation of the numerous consistent elements and stylistic distinctions, remnants of Maya architecture have become an important key to understanding the evolution of their ancient civilization.
The Maya priest had the job of interpreting these cycles and giving a prophetic outlook on the future or past based on the number relations of all their calendars. They also had to determine if the "heavens" or celestial matters were appropriate for performing certain religious ceremonies. The Maya practiced human sacrifice. In some Maya rituals people were killed by having their arms and legs held while a priest cut the person's chest open and tore out his heart as an offering.
It is the only writing system of the Pre-Columbian New World which is known to completely represent the spoken language of its community. In total, the script has more than a thousand different glyphs , although a few are variations of the same sign or meaning, and many appear only rarely or are confined to particular localities. At any one time, no more than around 500 glyphs were in use, some 200 of which (including variations) had a phonetic or syllabic interpretation.
The numerals are made up of three symbols; zero (shell shape), one (a dot) and five (a bar). For example, nineteen (19) is written as four dots in a horizontal row above three horizontal lines stacked upon each other. Numbers after 19 were written vertically up in powers of twenty. For example, thirty-three would be written as one dot above three dots, which are in turn atop two lines. The first dot represents "one twenty" or "1×20", which is added to three dots and two bars, or thirteen. Therefore, (1×20) + 13 = 33. Upon reaching 20^2 or 400, another row is started. The number 429 would be written as one dot above one dot above four dots and a bar, or (1×20^2) + (1×20^1) + 9 = 429. The powers of twenty are numerals , just as the Hindu-Arabic numeral system uses powers of tens. [
The essentials of the Maya calendric system are based upon a system which had been in common use throughout the region, dating back to at least the 6th century BC. It shares many aspects with calendars employed by other earlier Mesoamerican civilizations, such as the Zapotec and Olmec , and contemporary or later ones such as the Mixtec and Aztec calendars . Although the Mesoamerican calendar did not originate with the Maya, their subsequent extensions and refinements of it were the most sophisticated. Along with those of the Aztecs, the Maya calendars are the best-documented and most completely understood.