Hatun Machay :
An Amazing Stone Forest Ideal for Climbing

Hatun Machay is a vast stone forest located in the Cordillera Negra, in the Áncash region. The site lies within the territory of the Pampas Chico community, in the province of Recuay, about 70 kilometres south of Huaraz.

Sitting at an altitude of around 4,200 metres, Hatun Machay covers nearly 200 hectares. The landscape is defined by countless rock formations sculpted over time by erosion, set in a particularly open and spectacular high-mountain environment.

What makes Hatun Machay truly unique is its impressive concentration of rock formations. Across several hundred hectares, enormous boulders and stone walls create a highly distinctive landscape, often described as a stone forest or a lunar-looking mineral setting.

The rocks come in a wide variety of shapes, the result of erosion processes that have gradually shaped them through the action of water, wind, ice and shifting climatic conditions. Some silhouettes resemble animals, faces or other recognisable figures, leaving plenty of room for the visitor to observe and let their imagination wander.

Rock formations sculpted by erosion

The landscapes of Hatun Machay bear witness to the long-term action of natural forces on the terrain of the Cordillera Negra. Cracks, cavities, walls and boulders have been gradually shaped by the environmental conditions of this high-mountain region.

This diversity of forms is one of the site's main draws. As you walk through the stone forest, you come across narrow passageways, monumental boulders, small hollows and walls with particularly striking silhouettes.

A mineral landscape where nature meets imagination

Several formations at Hatun Machay are traditionally associated with the shapes of animals or characters. Some resemble frogs, turtles, eagles or other animals, while others take on the appearance of faces or human figures.

These natural shapes are not sculptures made by humans: they are mainly the result of erosion. They nevertheless add to the site's unique atmosphere and make exploring the stone forest on foot a particularly rewarding experience.

Hatun Machay is particularly renowned for its sport climbing potential. Its many walls and rock formations offer a wide variety of routes and boulders, which has helped establish the site as a key destination for climbers keen to explore the Cordillera Negra.

Climbing sources list more than 200 routes, ranging from sectors suitable for relatively experienced climbers to much more demanding passages. The site also offers bouldering on numerous rock formations.

Climbing routes for all levels

The variety of walls is one of Hatun Machay's main assets. Routes unfold across rocks with varied profiles, generally vertical or slightly overhanging, while some sectors also feature boulders suited to climbing without a rope.

Grades vary considerably, but high altitude must be taken into account whatever the climber's experience. At around 4,200 metres, physical effort can be noticeably more demanding than at lower altitudes, especially during the first few hours on site.

Climbing in an exceptional natural setting

The appeal of climbing at Hatun Machay also lies in its setting. Routes are spread out amid the stone forest, between large rock formations and the vast high-altitude landscapes of the Cordillera Negra.

For climbers, a visit combines sport with the discovery of an unusual geological environment. For companions who do not climb, several sectors can also be explored on foot.

Even without climbing, Hatun Machay is a wonderful place to explore on foot. A marked route takes you through the stone forest, gradually revealing the rock formations, hollows and varied landscapes that make up this vast site in the Cordillera Negra.

The walk most often mentioned around the site forms a loop of about 4.5 kilometres, usually completed in 2 to 2.5 hours depending on your pace and how often you stop. This is not just a standard hike: the route is above all an invitation to slow down and take in the peculiar shapes of the rocks and the high-mountain surroundings.

A walk among boulders, walls and rock formations

The route crosses several areas of the stone forest, where rock formations vary widely in size and shape. Some stand isolated in the landscape, while others form passageways, walls or small hollows.

Exploring on foot also opens up many viewpoints over the open landscapes of the Cordillera Negra. Changing light throughout the day transforms the appearance of the rocks, making it a particularly rewarding experience for photographers.

A hike to be enjoyed at high altitude

At an altitude of around 4,200 metres, this hike requires more care than a walk on the plains. Even though the route does not necessarily involve significant technical difficulty, the lack of oxygen can increase fatigue and slow your progress.

It is therefore best to walk at your own pace, bring plenty of water and take your acclimatisation into account before setting off to explore the site.

At the heart of the stone forest, Hatun Machay also holds a significant rock art heritage. Several rock hollows and walls feature paintings and engravings that bear witness to the ancient presence of people in this part of the Cordillera Negra.

The main cave is one of the most rewarding places to visit. Its walls preserve various figurative and geometric motifs, including depictions associated with animals, human figures and abstract shapes. The colours observed include reds, blacks and whites.

Rock art still being studied

The exact age of the paintings and engravings at Hatun Machay should be treated with caution. Some interpretations place them in a very ancient context of human occupation in the Andes, while archaeological research continues to shed light on their meaning.

Studies devoted to the site have examined in particular the diversity of the depictions found on the walls. The motifs include anthropomorphic, zoomorphic and geometric figures, as well as compositions whose meaning remains difficult to determine with certainty.

A place that may have served a ceremonial purpose

The presence of the paintings, engravings and certain natural features of the cave has led several researchers to question the function of these spaces. Some studies suggest in particular a symbolic or ceremonial dimension, rather than a simple use as a shelter.

Other local interpretations link certain depictions to the cycles of nature and to observations of the sky. These hypotheses are valuable for understanding the cultural richness of the site, but they should be distinguished from directly observable archaeological facts.

The landscape of Hatun Machay is the result of a long geological evolution and the gradual action of natural forces. Water, wind, temperature changes and, at various periods, glacial activity all helped shape the rocks and create the spectacular forms visible today.

However, the various sources devoted to the site do not all describe the composition of the rocks in the same way. Some mainly mention granite, while geological and archaeological studies also refer to volcanic rocks, in particular andesite. It is therefore best to focus above all on the importance of erosion processes in shaping the landscape, rather than attributing the entire site to a single type of rock.

Erosion at the heart of Hatun Machay's formation

Over time, erosion processes gradually carved out cracks, rounded off certain boulders and sculpted the walls. This evolution explains the great diversity of forms you can see in the stone forest.

The hollows, rocky corridors, irregular surfaces and imposing boulders found today are thus the result of a very ancient natural transformation. Geology is therefore an essential part of Hatun Machay's identity, just as much as climbing and rock art heritage.

Geological interest at the heart of the Cordillera Negra

Exploring Hatun Machay also offers a chance to observe first-hand the effects of erosion on a high-mountain landscape. The differences in shapes and relief give the site a particularly spectacular character and partly explain the stone forest impression that defines it.

For visitors interested in geology, the hike thus offers a genuine way of reading the landscape: the rocks become visible witnesses to the evolution of the terrain and the natural conditions that shaped this part of the Cordillera Negra.

Despite the harsh conditions linked to altitude, the surroundings of Hatun Machay are home to vegetation and wildlife adapted to the high-mountain environments of the Cordillera Negra. The landscape, mainly mineral, is dotted with plants typical of high-altitude zones and also provides a habitat for several Andean species.

Vegetation adapted to the high-mountain climate

The vegetation around Hatun Machay is mainly made up of plants able to withstand cold, wind, sharp temperature swings and limited water availability. Among the characteristic species of this environment is the Raimondi's Puya, an emblematic plant of the high Peruvian Andes.

You will also find patches of ichu, the tough grasses typical of high-altitude Andean landscapes. Their presence helps break up the very mineral appearance of the stone forest and serves as a reminder that Hatun Machay is a high-mountain ecosystem, not just a rocky site.

Discreet wildlife in the landscapes of the Cordillera Negra

Wildlife is often harder to spot than the rock formations, but several species adapted to Andean conditions may be present in the surrounding area. Available information mentions in particular the vizcacha, the Andean fox, the puma, the vicuña and certain deer species.

These animals live in an environment where resources are limited and temperatures can vary widely between day and night. Spotting them remains unpredictable: it is best to move quietly through the site and keep a respectful distance from wild animals.

Hatun Machay lies about 70 kilometres south of Huaraz, in the province of Recuay. Access is via Recuay, Cátac and Lake Conococha, before reaching the community of Pampas Chico and the stone forest.

Getting to Hatun Machay by private vehicle

Coming from Huaraz, the route heads south towards the Conococha area. From there, access to Hatun Machay continues along a secondary road towards Pampas Chico and on to the stone forest.

Available information indicates that this secondary road starts near kilometre 131 of the main highway. From the junction, a few more kilometres along the secondary road bring you to the Hatun Machay area. Conditions on this final stretch can vary depending on the season and the weather.

Getting to Hatun Machay by public transport

It is also possible to reach Cátac by public transport from Huaraz, then continue towards Hatun Machay by local transport or private vehicle. This option does, however, require careful planning of the final leg, as Hatun Machay is not directly on the regular transport route.

For a first visit, especially if the aim is to go climbing, it is advisable to arrange round-trip transport in advance so you do not have to rely on a vehicle being available on site.

A visit to Hatun Machay requires a minimum of preparation because of its remoteness and, above all, its altitude, which reaches around 4,200 metres. Conditions in the mountains can change quickly, and the services available on site remain limited.

When to visit Hatun Machay

The most favourable period is generally the dry season, from May to November. Days are then more suitable for hiking and climbing, even though temperatures remain cool at this altitude.

The months of June, July and August usually offer particularly pleasant daytime conditions, with often sunny weather. Nights, however, can be very cold, and the temperature swings between day and night are considerable.

Refuge and camping at Hatun Machay

A refuge is located near the climbing area and allows visitors to spend the night on site. Available information mentions facilities such as beds, a kitchen and toilets. A camping area is also available for travellers who prefer to sleep in a tent.

Reception conditions and prices may nevertheless change. It is therefore best to check the information available from the community or the site manager before planning an overnight stay at Hatun Machay.

Indicative fees for entry, camping and overnight stays

Hatun Machay is a site managed by the local community, which explains why the fees charged generally remain modest. They nevertheless vary depending on the type of visitor and the activity practised. As a purely indicative guide, the amounts observed are as follows:

• Daily entry fee – adult / general public: about S/ 10 per person;
• Daily entry fee – university students and residents of the province of Recuay: about S/ 5 per person;
• Daily entry fee – schoolchildren: about S/ 2 per person;
• Camping: about S/ 10 to S/ 20 per person per night, depending on the area used and the community services involved;
• Overnight stay in a refuge or choza (traditional shelter): about S/ 15 to S/ 35 per person per night, depending on the level of comfort offered. A personal sleeping bag is essential and is not provided.

Important: these amounts are given as an indication only and may change at any time. The wisest approach is therefore to check in advance with the community, the refuge or the Huaraz tourist office, and to bring enough cash, as there is no ATM or card payment on site. This is particularly true if you are organising your visit under your own steam: transport, entry, camping or overnight stay, meals and any unexpected costs must all be anticipated.

If you go through an agency in Huaraz, they will be able to tell you exactly what is included in the package (transport, guide, meals, entry, equipment, etc.) and, transparently, the amounts corresponding to what is not included. Do not hesitate to ask for this list before booking, to avoid any unpleasant surprises once you are on site.

What to bring for a visit

Because of the altitude and the lack of many nearby services, it is recommended to set off well prepared. Whether you are planning a day trip or a stay devoted to climbing, be sure to bring:

• warm clothing for the cool temperatures, especially at the end of the day;
• sun protection: sunglasses, sunscreen and a hat;
• plenty of water for the duration of your visit;
• food or snacks, as buying options on site are limited;
• good shoes for walking across the rock formations and trails;
• for climbers, equipment suited to the chosen route and preparation that takes the altitude into account.

At around 4,200 metres above sea level, Hatun Machay requires visitors to take the realities of high mountain terrain into account. Even on a simple walk through the stone forest, altitude, cold, wind and sun exposure can make the effort more demanding than it appears.

Take altitude seriously

It is best to visit Hatun Machay after spending enough time in Huaraz or the surrounding region to allow your body to gradually adapt to the altitude. Arriving straight from a low-altitude area can make hiking or climbing noticeably more tiring.

Walk at your own pace, avoid sudden exertion and plan regular breaks. If you feel seriously unwell due to altitude, it is best to stop the activity and head back down.

Protect yourself from the cold and the sun

High-mountain weather can be deceptive: the sun can be intense during the day, while temperatures drop quickly as soon as the sky clouds over or towards the end of the day. So plan for warm, layered clothing, as well as effective protection against solar radiation.

Sunglasses, sunscreen and a hat are particularly useful. Good shoes are also essential for moving comfortably along the trails and between the rock formations.

Respect a fragile environment

Hatun Machay has natural, scenic and cultural value all at once. Visitors should avoid touching or damaging the rock paintings and engravings, moving stones or leaving litter in the stone forest.

For climbers, respecting the existing sectors and equipment is also essential in order to preserve both the climbing conditions and the site's natural environment.

Hatun Machay has a value that goes far beyond its tourist appeal. The stone forest, the natural formations, the rock paintings and engravings and the high-mountain environment all form a heritage that is important to preserve.

The site lies within the territory of the Pampas Chico community, which plays an important role in its organisation and management. The growth of tourism must therefore take into account both the preservation of this heritage and the interests of the local population.

A natural and cultural heritage to preserve

The growing number of visitors to the site, particularly hikers and climbers, calls for particular attention to the conservation of natural spaces. Rock formations, high-altitude soils and vegetation can be weakened by excessive footfall or unsuitable practices.

Rock art heritage also requires specific protection. The ancient paintings and engravings must not be touched, covered or damaged. Their conservation depends in particular on visitors' respect and on limiting human interference on the walls.

The role of the Pampas Chico community

Community management is an important part of Hatun Machay's future. The Pampas Chico community takes part in promoting the site and seeks to develop tourism that raises awareness of its heritage while preserving the natural and cultural features of the territory.

This approach is particularly important for a site where several uses coexist: climbing, hiking, discovery of rock art heritage and nature observation. Preserving this balance is one of the main challenges for Hatun Machay's future.