Tonina lays 14 km east from Ocosingo on the border of the Mayan lowlands and highlands. Nestled 2,950 feet/ 900 m high, you can often see the clouds roll in and stand above them at this lofty site. Thought to be built by an astronomical society, the area belongs to the lowland tradition.
The center of Tonina is built on the side of a large hill in seven terraces producing the overall effect of a stepped pyramid. Numerous chambers and passageways exist and there are several buildings located in front of the main complex which may have been used in conjunction with structures on the main buildings.
In May 2010, specialist from Instituto Nacional de Antropología e Historia (National Institute of Anthropology and History) confirmed that in the north part of the acropolis of Tonina there are some large edifications of Mesoamerica that can only be compared to those of Tikal and El Mirador in Guatemala.
The pyramid of Tonina reaches 75 meters, while the pyramid of Sun in Teotihuacán, near Mexico D.F. is 65 m. These dimensions have been confirmed during last restoration works at Tonina and the specialists from INAH claim that this prehispanic site was much larger than what it was believed to be.