Nor Yauyos-Cochas Landscape Reserve, Protected landscape reserve in Lima and Junín regions, Peru.

The Nor Yauyos-Cochas Landscape Reserve covers 221,268.48 hectares in the upper and middle Cañete River basin and the Cochas Pachacayo basin, in the highlands of the Lima and Junín departments. The Cañete forms emerald lagoons here, and the reserve runs from Magdalena eastward through Huancaya, Vilca and Tanta toward the Pariacaca snowcap. Its stone arch bridges, such as the one over the Cañete, have a single wide arch, rough masonry undersides and parapets of uneven tan and grey stones set with short tapered posts.

The Peruvian government established the reserve in 2001 to safeguard ecosystems and archaeological sites in this remote Andean zone. Pre-Columbian settlements show that people have lived and farmed at these elevations for centuries before official protection began.

The name combines two geographic terms from the region and reflects the administrative division between two departments. Local communities continue to use parts of the reserve as grazing land for llamas and alpacas, maintaining traditional herding routes through the high elevations.

Travelers should bring warm clothing in multiple layers, as temperatures swing sharply between day and night and weather changes are frequent. Access is mainly via unpaved roads, which vary in condition depending on the season and recent rainfall.

Qaqa Mach'ay, in Laraos district, lies at 4,930 m and is the highest surveyed cave in the world, 125 m deep. Sima Pumaqucha, one of South America's deepest caves, drops 630 m vertically at 4,400 m in the same district. The reserve's protected status dates from 2001, when Peru created the Reserva Paisajística category to make protection possible.