The Rio Santa runs 200 km northward between the Cordillera Negra in the west and the Cordillera Blanca in the east and overlooks the fertile Callejón de Huaylas. To the south lies the summit of the Huayhuash Mountains. Huaraz, the largest town in Callejón, lies at an altitude of 3,000 m. In the valley north of Huaraz lie the towns of Carhuaz, Yungay and Caraz. en.wikipedia.org/wiki/Santa_River en.wikipedia.org/wiki/Huaylas_Street