This extensive necropolis dates from the year 1000 AD, and anthropological and archaeological remains have been found inside from the Middle Horizon period associated with the Poroma and Inca cultures. Dozens of open tombs still contain their human remains. In some cases, these tombs are collected in groups to form a nucleus, or family mausoleum. One area shows evidence of tall and rectangular structures that could have been more elaborate forms of these nuclei. The necropolis is one of the largest cemeteries discovered in the Nazca Valley.