Located on the shore of two lagoons, it is the most important and oldest of the site. It has more than fifty buildings, several patios, vaulted rooms, shrines, a large plaza, a ball game and the second tallest building of the site, known as the Church. In this group we find seven sculpted stelae. From here there are six sacbeob that end in groups of buildings of diverse dimensions and importance.

The Church: It is one of the most important structures of the site: Stela 11 was erected at its feet.

Ball Court: This Ball Court belongs to Group B. It shows the Kan stairway in the background, as well as panels with representations of captives embedded in each of the slopes.