Location and surroundings
Loma Arrechea is situated in Argentina, specifically in the Chubut region, within the Departamento Tehuelches and the municipality of Municipio de Gobernador Costa. Geographically, it belongs to the Putrachoique Range, which is part of the broader Patagonian Meseta and South American Interior Ranges. Within the Putrachoique Range, it holds the distinction of being the highest of 4 named peaks. The surrounding terrain is characterized by expansive arid tablelands and rolling hills typical of the Patagonian interior.
Neighbouring peaks
The immediate vicinity of Loma Arrechea includes several other named elevations and passes. Here are the nearest peaks and passes with their elevations, distances, and directions:
- Cerro Abelino (peak), 1,314 m, 4.8 km W
- Cerro Bandurria (peak), 1,025 m, 5.6 km N
- Cerro Delfino (peak), 1,206 m, 7.7 km SW
- Peña Granito (peak), 1,182 m, 8.8 km NE
- Cerro Chackay (peak), 1,217 m, 9.3 km SW
- Loma Pelada (peak), 1,480 m, 9.5 km E
- Cerro Las Crestas (peak), 1,776 m, 13.9 km NE
- Cerro Putrachoique (peak), 1,193 m, 14.1 km NE
Compared to these surrounding elevations, Loma Arrechea stands at 1,303 m, making it taller than most of its immediate neighbors, though the nearby Cerro Abelino rises slightly higher at 1,314 m just 4.8 km to the west.
The view from the summit
From the high point of Loma Arrechea, observers can look out over the vast expanses of the Patagonian Meseta. Within a 25 km radius, several taller or notable peaks rise above the landscape. The highest peaks within this distance include Cerro del Diablo at 1,506 m situated 22.4 km SW, Cerro de Pedrero at 1,365 m located 17.1 km E, Cerro Margarita at 1,270 m lying 21.7 km W, Cerro Painela at 1,230 m found 19.6 km SW, Cerro Piedra at 1,172 m located 17.6 km W, and Cerro Caballada at 1,160 m positioned 22.7 km W.
The range
Loma Arrechea belongs to the Putrachoique Range, which is a subdivision of the Patagonian Meseta within the wider South American Interior Ranges. The range contains 4 named peaks in total. Loma Arrechea itself serves as the high point of the range, standing at 1,303 m. The range features arid upland terrain typical of the region, surrounded by lower mesetas and distant mountain chains.
Climate and weather
Climate figures for Loma Arrechea are estimates derived from NASA POWER climate data covering the period from 2001 to 2020, with temperatures adjusted to the summit elevation of 1,303 m. At the summit, the warmest month is February with a mean temperature of about 9 °C, while the coldest month is July with a mean of about -2 °C. Precipitation in the surrounding area totals about 950 mm a year, with June being the wettest month, recording about 140 mm, and February the driest, with about 50 mm. Common weather hazards in this elevated Patagonian environment include strong winds, sudden temperature drops, and occasional snowstorms, even outside the peak of winter.
Best time to visit
Based on temperature estimates at the summit, the months with a mean temperature above freezing are January, February, March, April, May, September, October, November, and December. Precipitation patterns show that February is the driest month, making the warmer summer and early autumn months generally more favorable for outdoor activities. However, visitors must remain prepared for sudden weather shifts characteristic of the region's climate.
Nature and wildlife
The landscape around Loma Arrechea is dominated by dry upland steppe vegetation, low-growing shrubs, and hardy grasses adapted to cold, windy conditions and about 950 mm of annual precipitation. Wildlife in this remote part of Chubut typically includes species suited to the Patagonian Meseta, such as guanacos, upland foxes, and various birds of prey that patrol the open expanses and rocky outcrops.
Guides and organised ascents
For climbing and trekking in Argentina, engaging a certified professional is advisable when tackling unfamiliar terrain or challenging weather conditions. The national mountain guide association is the Argentine Mountain Guides Association (Asociación Argentina de Guías de Montaña (AAGM)), which is an IFMGA/UIAGM member. The national alpine club and mountaineering federation is the Argentine Ski and Mountaineering Federation (Federación Argentina de Ski y Andinismo, FASA). Established guiding companies operating in the country include Inka Expediciones based in Mendoza and Grajales Expeditions also based in Mendoza. Visitors should note that climbing Aconcagua requires a paid permit from Aconcagua Provincial Park in Mendoza, along with mandatory medical and rescue insurance, though permit rules vary by region and specific park jurisdictions.
Safety and preparation
Ascents in the remote hills of Chubut demand adequate physical preparation, wind-resistant clothing, navigation tools, and self-sufficiency in case of sudden weather deterioration. In the event of an emergency, the national emergency number in Argentina is 911, and 112 redirects to 911 on mobile devices. Having reliable communication devices and offline maps is essential before setting out into these isolated areas.
Interesting facts
Loma Arrechea holds the distinction of being the highest of 4 named peaks in the Putrachoique Range. Its nearest higher peak is Cerro Abelino, which reaches 1,314 m and lies 4.8 km away to the west. The mountain represents a key topographical feature within the local municipal area of Municipio de Gobernador Costa and the wider Departamento Tehuelches.
FAQ
How high is Loma Arrechea? Loma Arrechea reaches an elevation of 1,303 m.
Where is Loma Arrechea located? It is located in Argentina, within the Chubut region, Departamento Tehuelches, and the municipality of Municipio de Gobernador Costa, forming part of the Putrachoique Range.
Is Loma Arrechea the highest peak in its range? Yes, it is the highest of 4 named peaks in the Putrachoique Range.
What are the nearest peaks to Loma Arrechea? The nearest peaks include Cerro Abelino at 4.8 km W and Cerro Bandurria at 5.6 km N.
Is there water on the way to Loma Arrechea? There are no major huts or mapped springs with guaranteed drinking water directly on the slopes, so hikers should carry an adequate supply of 1.5 to 3 liters of water per person and treat any natural water sources found in the area.
Are there huts on Loma Arrechea? OpenStreetMap shows no hut or shelter within 2 km of the top, so visitors usually plan the ascent as a day trip or carry their own tent.
What is the mobile phone coverage like? Coverage in these remote hills is generally patchy and depends heavily on the mobile operator, but the universal emergency number 112 reaches emergency services over any available network.