It extends to the south of the first, outside the urban area. It is known for its main structure, called Los Pájaros, possibly was a temple and has an openwork crest with masks that remains in relatively good condition. Chronologically, it dates back to the Bejuco and Chintok phases of the Late Classic period. However, many of the other groups are distributed inside and on the perimeter of the current municipal capital of Calakmul. Such is the case of Group III, where we found a dozen structures, seven of which delimit two plazas, one of them closed and the other open to the south. According to the recorded evidence, it dates from the Late Classic. At present, the buildings of the south plaza have been intervened.

Structure III-5: It divides the aforementioned plazas and consists of four rooms with independent access, each one oriented to a cardinal point, which are arranged on a low platform. All the rooms have benches and were originally vaulted.

Structure III-6: It has four rooms that once had a vault; the central ones communicate with each other. However, one of them presents late modifications.

Structure III-7: It consists of a semirectangular platform that supports a structure whose main façade faces west, where the open plaza of the group is located. It contains four rooms, most of them with benches inside. Two of the rooms also have a view to the west, while at their ends there are as many rooms facing north and south, respectively, all of them originally vaulted.