La Chimba National Reserve

La Chimba National Reserve protects 1,250 hectares of coastal desert 16 km north of Antofagasta, encompassing the only significant patch of loma (fog-zone) vegetation on the Atacama coast between Tocopilla and Antofagasta. Established in 1988, it is the smallest of the Antofagasta Region's national protected areas but ecologically one of the most important, harbouring endemic plant and bird species adapted to the extreme hyperarid climate.

The reserve takes its name from the Spanish colonial term for a grazing commons. The defining feature of La Chimba is the camanchaca — a thick coastal fog formed when the Humboldt Current's cold water meets the warm air of the Atacama Desert. This fog condenses on the steep coastal hills and sustains a remarkable "fog oasis" ecosystem of cactus, bromeliads, and seasonal herbs that bloom in the austral winter (July–September).

By Plane

Cerro Moreno International Airport (ANF, IATA: ANF) in Antofagasta is 25 km south. Take a taxi to the reserve (CLP 20,000–25,000) or pick up a rental car at the airport.

By Car / Road

The reserve entrance is 4 km east of Route 1 (the coastal Pan-American Highway) north of Antofagasta, via a signed gravel road. From central Antofagasta, drive 30 minutes. The final 2 km to the ranger station require a vehicle with moderate ground clearance. There is no public transport.

The reserve has one main trail (Sendero de la Camanchaca, 2.5 km) starting at the ranger station. It is a walking-only area — no vehicles beyond the parking area. The trail is rocky and moderately steep; wear sturdy footwear.

• Loma fog oasis vegetation: the reserve's main attraction — see the endangered Eulychnia iquiquensis cactus (copao), the endemic Tillandsia landbeckii bromeliad that forms ground-hugging colonies, and seasonal flowering herbs.

• Mirador La Chimba: a viewpoint at the trail's highest point (approx. 600 m) overlooking the desert coast and the city of Antofagasta in the distance.

• Geoglyphs: faint pre-Columbian geoglyphs on the hillsides, depicting camelids and human figures, attributed to the Chinchorro or later Atacameño cultures.

• Bird hide: the ranger station has a small hide overlooking a shallow basin where the camanchaca moisture supports insects and seed-eating birds — look for the endemic Chilean woodstar hummingbird and the grey gull.

• Nature hike: the Sendero de la Camanchaca (2.5 km loop, 1.5 hr, moderate). Best walked in the morning (08:00–11:00) when the fog is thickest and most dramatic.

• Photography: the fog-shrouded cactus forest is a unique subject, especially in the mid-winter months (July–August) when the camanchaca is deepest.

• Wildflower viewing: after the occasional winter rain event, usually between June and August, the reserve puts on a brief but spectacular display of flower blooms.

• Educational visit: the small visitor centre has panels (in Spanish) explaining the fog-capture ecology.

No food is available. Pack snacks for a half-day visit. Return to Antofagasta for a meal — El Arriero (mains CLP 8,000–15,000) and the Mercado Central seafood market are good choices.

Carry your own water — there is none in the reserve. Tap water in Antofagasta is desalinated and safe.

There is no accommodation in La Chimba National Reserve. Stay in Antofagasta:

• Budget: Hostal La Casa en el Desierto (dorm from CLP 12,000).
• Mid-range: Hotel Antofagasta (CLP 55,000–80,000).
• Upscale: Enjoy Hotel Antofagasta (CLP 90,000–150,000).

There are no shops, kiosks, or cafes in the reserve. Bring all water and snacks from Antofagasta. The visitor centre sells a trail map for CLP 1,000.

• Antofagasta (20 km south, 25 min): La Portada natural arch, Huanchaca Ruins, Museo de Historia Natural, and the coastal mall.
• Morro Moreno National Park (10 km north, 15 min by road): Humboldt penguin colony, sea lion rookeries, and the La Portada viewpoint.
• Mejillones (50 km north, 45 min): swimming bay, historic iron pier, and the Salar de Mejillones flamingo site.
• Calama (200 km southeast, 2.5 hr): gateway to Chuquicamata copper mine and the San Pedro de Atacama desert circuit.
• Taltal (170 km north, 2 hr): nitrate-era town and the Pan de Azúcar National Park.