Central Plaza. It is a building with multiple rooms.Structure 4 (or Structure IV) is a group of three temples on the east side of the Central Plaza. It is divided into three sections, labelled Structures 4a, 4b and 4c. The central Structure 4b is built upon a substructure dating to the Preclassic period. Together with Structure 6 on the opposite side of the plaza, these buildings form an E-Group that may have been used to determine the solstices and the equinoxes.Structure 5 (or Structure V) is a large building located on the plaza to the north of Structure 2. It was surrounded by 10 stelae, many dated to the 7th century AD although the building itself was first erected in the Preclassic period.Structure 6 (or Structure VI) is on the west side of the Central Plaza and, together with Structures 4a, 4b and 4c, forms an E-Group astronomical complex. In 1989 observations verified that on March 21, the vernal equinox, the sun rose behind Structure 4b as seen from Structure 6.Structure 7 (or Structure VII) is a temple pyramid on the north side of the Central Plaza. It faces south and stands high. Five plain stelae were erected on the south side of the pyramid. It underwent several construction phases from in the Late to Terminal Classic. The pyramid was topped by a three-room temple that possessed a tall stucco-covered roof comb. A patolli game board was carved into the floor of the outermost room of the temple.Structure 8 (or Structure VIII) is a small building located on the north side of the Central Plaza, to the east of Structure 7. It is associated with Stela 1 and its altar. Stelae, murals and ceramics Calakmul is one of the most structure-rich sites within the Maya region. The site contains 117 stelae, the largest total in the region. Most are in paired sets representing rulers and their wives. However, because these carved stelae were produced in soft limestone, most of these stelae have been eroded beyond interpretation. Also many elaborate murals were discovered at Calakmul. These murals do not represent activities of the elite class. Rather, they depict elaborate market scenes of people preparing or consuming products such as atole, tamales, or tobacco as an ointment. Also items being sold were textiles and needles. These murals also have glyphs within them describing the actions occurring. The most prominent figure in these