  Mounts and hills played a predominant role in all pre-Hispanic Andean
cultures, especially for the Inca culture. Through the use of georeferenced
orthophotography, we found that the Inca site, Ruinas de Chada, represents the
origin of a radial ceque system with alignments connecting, at one end high
peaks of mounts at the Andes, and on the other end the summit of small hills in
which important shrines were built. These alignments extend over two hundred
kilometers, thus we propose that the information codified on this shrine was
based on an ancient geodetic science. A sacred geometric relationship is
encrypted in the pattern formed by the position of all shrines with high
accuracy, in which the Andean Chakana symbol is represented. These findings
suggest that the valley of Chada could have been the sacred center of
Collasuyu.
