Las Hermosas National Natural Park, Protected area in Tolima, Colombia.

Las Hermosas National Natural Park lies on the highest part of the Cordillera Central, spanning Tolima (80%) and Valle del Cauca (20%). Its terrain runs from 1,600 m to 4,400 m and holds three rock types: intrusive igneous, metamorphic and recent volcanic formations. A dark blue lake with a lobed outline and a small left-hand inlet sits in a bowl-shaped valley; steep slopes of low dark green and brownish shrubs rise on all sides, higher and more uniform on the right, and a pale-leaved rosette plant grows among dry grass in the foreground.

The park lies in territory the Pijao peoples defended against Spanish conquistadors, and their descendants still live in the region. In the late 20th century the area served as a strategic corridor for the FARC-EP during Colombia's internal armed conflict. A campesino reserve zone (Zona de Reserva Campesina) has been proposed for the area.

The Pijao inhabited this area before the Spanish conquest and defended it as one of their most contested strongholds; their descendants still live in the region. A peasant reserve zone (Zona de Reserva Campesina) has been proposed for the area.

The park spans the border of Tolima (80%) and Valle del Cauca (20%), with access from municipalities such as Rioblanco, Planadas and Chaparral in Tolima and Palmira, Buga, El Cerrito, Tuluá and Pradera in Valle del Cauca. A canyon formed by the surrounding rivers lies within the area but is hard to reach. December–March and July–August are the dry periods; rainfall averages 2000 mm at lower elevations and 1500 mm above 3000 m, where temperatures fall to about 4 °C.

The park holds 387 glacial lakes, not just over 300, and its wetlands sit on the divide between the Magdalena and Cauca river basins. The lakes drain into rivers including the Nima, Amaime, Tuluá, Amoyá and Anamichú, and fish in them feed on green, blue-green and unicellular algae.