Overview Sector AA stands between Sectors Z and BB and includes the eastern long structure (Str. AA1) of an E-Group. This area is uneven and seems disturbed. Sectors Z and AA, Nixtun-Ch’ich’, Guatemala Excavations Structure AA1 Structure AA 1/2 Op 3999.5, 4198 Location This video demonstrates Sector AA’s proximity to other sectors: Z, JJ, KK, LL and BB.