Yerba Loca Nature Sanctuary, Santiago de Chile

Four hikers walking through a mountainous landscape with snow patches, dry shrubs, and dramatic snowy peaks in the background.
Hikers exploring the Andes Mountains on a clear day, surrounded by snow-covered peaks and rugged terrain 

If you’re visiting Santiago and dreaming of a true Andean escape without venturing too far, Yerba Loca Nature Sanctuary might be exactly what you're looking for. Located just 25 kilometers from the Chilean capital, this protected area offers a stunning mix of glacial landscapes, biodiversity, and pre-Columbian history—all within a short drive.

Whether you’re into glacier trekking, archaeology, wildlife photography, or simply need a peaceful escape, Yerba Loca delivers. Its closeness to Santiago makes it perfect for a day trip, but the experiences are as powerful as any remote Andean adventure.

What Is Yerba Loca and Why Visit?

Yerba Loca in Summer
Founded in 1973 and covering over 39,000 hectares, Yerba Loca (literally “Crazy Herb”) is one of the most accessible nature sanctuaries in the central Andes. With altitudes ranging from 900 m to over 5,300 m, it spans diverse ecosystems, from shrublands and highland wetlands to glaciers and mountain peaks.

The sanctuary is named after the Yerba Loca stream, born from the La Paloma Glacier. According to local legend, animals grazing the area's wild herbs behaved strangely, giving rise to the name. Today, the stream’s mineral-rich waters are beautiful—but undrinkable.

Top Things to See and Do

  • Camp at Villa Paulina

The first stop inside the sanctuary is Villa Paulina, a basecamp surrounded by nature and equipped with camping facilities, picnic areas, and access to hiking and biking trails.

  • Hike to Casa de Piedra Carvajal

Roughly 17 km from Villa Paulina, this ancient rock shelter has been used since pre-Hispanic times. It’s one of over 100 archaeological sites found in the sanctuary, with evidence of human activity dating back 8,000 years.

  • Marvel at La Paloma Glacier

La Paloma is one of the largest glaciers in central Chile and a must-see for any nature lover. Though climate change has reduced its size, it remains a breathtaking sight—and a dramatic reminder of the region’s glacial past.

  • Ice Climb at Las Cascadas (Winter Only)

Near the base of Falso Altar, frozen waterfalls in winter draw adventurers for ice climbing and photography.

  • Explore Incan Mysteries

In 1954, the well-preserved body of an Inca child sacrifice—now known as the Mummy of El Plomo—was discovered near the summit of El Plomo. A replica is on display at the National Museum of Natural History in Santiago.

When to Go

  • Spring to early Fall (Sept–March) is the best time for hiking, mountain biking, and camping. Trails are open and weather is mild.
  • Winter (June–August) offers stunning snow-covered views but limited access. Some trails may close due to snowfall.

How to Get There

There’s no public transportation directly to the park. Your best options are:

  • By car: Take Avenida Las Condes, which becomes Camino a Farellones, and enter the park at curve #15. Then drive 4 km on gravel to reach Villa Paulina.
  • By taxi: Taxis from Plaza San Enrique are commonly used by visitors.
  •  Via guided tour: Several operators in Santiago include Yerba Loca in full- or half-day excursions.
Google Map

Wildlife and Nature

Yerba Loca is home to: 
  • Birds of prey, including the majestic Andean condor
  • Native mammals such as vizcachas, foxes, and even pumas (rarely seen)
  • Unique high-altitude plants and Andean reptiles It’s recognized as an Important Bird Area and a biodiversity hotspot, making it a favorite for birdwatchers and conservationists.


Tips for Travelers

  • Bring your own water and food—services are limited.
  • Dress in layers, as weather changes quickly in the mountains.
  • Be mindful of altitude—some trails reach over 3,000 meters.
  • Entry fees are affordable (approx. USD 3–4), and reservations are not always required for day visits.

    ✅ Quick Answers for Curious Travelers

    1. Why is this sanctuary called “Yerba Loca”?
    The name comes from stories told by local farmers who noticed strange behavior in their horses after eating a herb found in the area. Because of this, they started calling it “Yerba Loca,” which means “crazy herb.”
    2. How many native plant species are found in Yerba Loca?
    The sanctuary is home to around 500 plant species, which represent 34% of the native flora of the Metropolitan Region and more than 17% of Chile’s Mediterranean flora.
    3. What activities can visitors enjoy in Yerba Loca?
    The park offers hiking trails of varying difficulty, camping areas, picnic spots, flora and fauna workshops, birdwatching, and mountaineering. It is open to visitors year-round.
    4. What is the cultural and historical significance of Yerba Loca?
    Yerba Loca has been inhabited since pre-Hispanic times, with more than 100 archaeological sites and objects dating from between 8000 and 6000 BC. These include remains from cultures such as the Incas and the Chiquillanes.
    5. What unique natural phenomena can be observed in the sanctuary?
    During the summer, the Yerba Loca stream turns a reddish color due to a high concentration of iron salts and sulfates. This phenomenon is known as “Polcura,” which means “yellow earth” in Mapudungun.
    If you have more questions, feel free to leave a comment below.

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