Structure 14 or Platform of the Stelae

Structure 16 or Oval Palace: Low platform with irregular height.

Structure 17 or The Twins: Rectangular base where Stelae 1 and 2 are located. The front face of Stela 1 shows Ajchan Naah “He of the House of Heaven”, it shows the Maya date corresponding to January 18, 840. The texts that identified the central character, a king of Talol, are not preserved; on the reverse, other texts identify the superior character as Ukit Kan Lek Tok.

It is the most extensive and where the largest, oldest and most contrasting constructions are located.

Structure 1 or Acropolis: This monumental architectural complex was the residence and tomb of the ruler Ukit Kan Lek Tok'. It is a great palace that was built over a long period of time, integrated by many rooms, stairways and other elements.

It is the highest structure of the site, measuring 160 m long, 68 m wide and 32 m high. It is integrated by six levels formed by many superimposed constructive stages. In the complex there are many vaulted rooms, some of them subway, which are connected by a network of corridors and sclinates. It should be noted that on the six bays of the fourth level, a frieze with seven characters modeled in stucco was found.

Room 43: It is the first of the three bays located in the fourth level of the Acropolis and the least preserved due to the deterioration caused by the roots of a tree that grew on top of it.

Room 35 or Sak Xok Naah: It is the second room of the fourth level and its name means “the white house of reading”. Here the remains of Ukit Kan Lek Tok' were deposited, along with a rich offering that contained more than 7,000 pieces of shell and snail. Its façade is notoriously different, it has a great mask, elaborated in stucco, of the Monster of the Earth with open jaws.

It must have been the main access to the enclosure reserved for the elite, protected by wide stone walls and palisades. It has four openings: the one of access properly; two that give to the staircases with alfardas and one that gives toward the ramp, probably to facilitate the tasks of supply to the Walled Enclosure. From the architectural point of view it is unique in its type, because it is the union of four Mayan vaults that support a very thick roof.

The building has limestone walls and lime and sand mortar. The walls were decorated with stone reliefs, assembled with each other, and these in turn covered by a thick layer of stucco, made of lime and medium and coarse sand. These materials are very abundant in the region and were extracted from nearby quarries and sascaberas.

The processing of these materials consists of the selection of the best stones to produce lime through the use of high temperature in specialized kilns and the consequent slaking of the quicklime in open-air lime kilns. The selection of sands in the sascaberas made it possible to differentiate stone powders that mixed with lime produce a very resistant and durable concrete. In the case of the façade, the stuccoes were not painted as in other parts of the Acropolis, which showed bright colors derived from the treatment of mineral and vegetable products.

Stucco reliefs are formed with a lime paste (calcium hydroxide) from the calcination of limestone at over 900º C in a kiln. Once calcined, they were “slaked” with water and the resulting paste was mixed with fine, medium and coarse sands to form mortars. These mortars were modeled with hands and tools. The fresh mortar pastes usually had stone supports to hold them, attached to the architectural elements (walls, friezes, cornices), many times the “stone souls” were carved in the same shape, design and proportion as the stucco reliefs that covered them. Before drying and setting completely, they were painted with mineral paints suspended in water, or in some other binder (vegetable gums or animal proteins). Once the stucco had set, the color remained fixed on the surface, although they were also left without color, and were polished in the drying process to leave the surface impermeable.