Regional Conservation Area of System of Hills of Lima, Conservation area in Lima Department, Peru

The Regional Conservation Area of System of Hills of Lima covers 13,475.95 hectares in five separate areas: Lomas de Ancón, the largest at about 70 percent of the total, Lomas de Carabayllo 1 and 2, Lomas de Amancaes north of Rímac, and Lomas de Villa María east of Villa María del Triunfo. These fog-fed hills rise above the flat, densely built coastal plain and carry herbaceous, shrub and tree vegetation that appears periodically.

The protection status was officially established on December 7, 2019, by Peru's Ministry of Environment following sustained efforts by conservation groups and residents to safeguard the hills. This declaration marked the formal recognition of the area's ecological importance.

The name loma means "hill" or "small elevation" in Spanish, describing the fog-fed hills that rise above Lima's flat coastal plain. The Amancaes hills are named after the amancaes flower, a yellow lily that blooms on these hills and gave its name to a traditional Lima festival held in June.

The five zones lie in the districts of Ancón, Carabayllo, Independencia, Rímac, La Molina, San Juan de Lurigancho and Villa María del Triunfo, so each is reached from a different part of the city. Vegetation surges periodically and is most intense in winter, when the coastal mists feed the hills; outside that season the ground is largely bare.

The five hill areas span seven Lima districts, from Ancón in the north to Villa María del Triunfo in the south. The Lomas de Ancón alone cover about 70 percent of the reserve's 13,475.95 hectares. The name loma means "hill" or "small elevation" in Spanish.