Oncol Park, Private protected area in Valdivia Region, Chile.

Oncol Park is a protected area in the Valdivia Region that preserves a section of temperate rainforest. The site features dense vegetation with multiple forest layers, from the canopy to the forest floor, supporting a variety of plant and animal species adapted to this moist coastal mountain environment.

Oncol Park is a private forest reserve owned by Forestal Valdivia, part of Celulosa Arauco y Constitución. It covers more than 2,500 hectares, mostly on Cerro Oncol, the highest point of the Valdivian Coast Range at 715 m, only 5 km from the sea. The park lies beside the Carlos Anwandter Nature Sanctuary on the Cruces River and is open all year.

The park lies on the south flank of Cerro Oncol, beside the Carlos Anwandter Nature Sanctuary on the Cruces River. Its Valdivian forest shelters the pink tupa (Lobelia bridgesii) and the latúe or palo de brujos (Latua pubiflora), a shrub the Mapuche used in ritual. Camping and picnic areas sit among the trees, and four viewpoints open onto the forest and the city of Valdivia.

The park is located some distance from Valdivia city and is most easily reached by car. Visitors should wear proper hiking boots since trails pass through damp forest areas where surfaces can be slippery.

From a high point in the park, visitors on clear days can spot several volcanoes that rise along the border between Chile and Argentina in the distance. These distant views stand out because they offer a perspective beyond the immediate forest environment most visitors focus on during their walks.