Acaray 2.4

For the hydroelectric power plant and HVDC-back-to-back facility in Paraguay, see Acaray Power PlantAcaray, also known as the Fortress of Acaray, is an archaeological site located in the Huaura River Valley on the near north coast of Peru (or the Norte Chico region). The impressive fortress is located on a series of three hilltops, each ringed with a number of perimeter defensive walls that have parapets and bastions, which stand as testaments to the military nature of the site. Radio carbon dating has established it was built about 900-200BC and abandoned 1000–1470AD. Surrounding the hilltop fortress are lower-lying areas of occupation and extensive cemeteries, which have been heavily looted.History of researchAttention was called to the site early on by the German archaeologist Hans Horkheimer, who wrote about Acaray in 1962 in the Peruvian magazine, Caretas, published in Lima. Calling it the Fortaleza de Huaura (the Fortress of Huaura), he deemed Acaray to be a true fortress, unlike the more well-known neighboring site of Paramonga in the Pativilca River Valley, whose defensive nature has been questioned. Horkheimer noted the abundance of rolled river cobbles on the surface of the site, which were likely used as projectiles or slingstones.