Structure C8 is a residential compound that was accessed from the alley running to the East Plaza from behind Pyramid C1. The entrance opened onto the alley from a patio situated in the southern portion of the compound. This patio was surrounded on the east, west and north sides by rooms, with the alley to the south. It was floored with stucco and Structure C8 was the only stuccoed residential building in the whole of the city. The north range of rooms backed directly onto the ravine immediately to the north of Group C; the lower portion of the walls of the west room and of half of the north room still stand. The west room was square while the north room was narrow and probably extended the entire width of the patio. Wear marks in the stucco floor indicate that a door once accessed the north room from the west. The workmanship of Structure C8 was of very high quality and indicates that it was the residence of a member of the city's elite. Its proximity to the large pyramid-temple C1 has led archaeologist Henri Lehmann to speculate that it was once the house of the high priest.