The reserve is built around a former limestone quarry, which has been reclaimed for nature conservation.
It is one of the few places in the region where the native 'Quebracho blanco' forest remains largely undisturbed.
The reserve contains specific zones designated for the rehabilitation of injured native wildlife before potential release.
Its microclimate is influenced by the 'Chorrillos' stream, which provides a constant water source throughout the dry season.
The park serves as a natural barrier helping to prevent erosion on the mountain slopes overlooking the city of Merlo.
Reserva Florofaunística de Rincón del Este is a protected natural area situated at the base of the Comechingones mountain range in Merlo, San Luis. The reserve serves as a transition zone between the Espinal and Chaco Serrano ecoregions, fostering high biodiversity. Visitors access a network of trekking paths that lead through native vegetation, including Molle and Algarrobo trees. The area is a primary habitat for local fauna such as foxes, iguanas, and various bird species. A prominent feature is the El Viejo Molino trail, which winds alongside mountain streams. The site is characterized by its steep, rocky terrain and elevation gains as it transitions into the higher mountain foothills. It functions as a crucial ecological corridor for the preservation of San Luis's endemic flora.
The viewing platform overlooking the valley towards the city of Merlo at the start of the main trail loop.
Bring a refillable water bottle as there are no drinkable water taps inside the trails.
Use trekking poles if you plan to hike the steeper, higher-altitude paths.
Check local weather alerts for wind, as the 'Chorrillero' wind can significantly drop temperatures in the mountain zone.
Do not attempt the mountain trails during or immediately after heavy rainfall due to the risk of rockfall and slippery terrain.
Open year-round, but access may be restricted during severe storm alerts.
No smoking, no littering, and stay strictly on marked paths to avoid disturbing wildlife habitats.
