Perou Decouverte
Perou Decouverte
Marcahuasi is a rocky plateau of about 4 km² located in the province of Huarochirí, at approximately 4,000 m altitude. Its name, of Quechua origin, means "house of the protector" or "great house." It is known for its impressive granite formations that, sculpted by erosion, take on human and animal shapes, giving rise to mystical theories and legends. For several decades, Marcahuasi has also become a reference point for astrotourism and for those seeking experiences related to mystery and night sky observation.
The plateau is located in the district of San Pedro de Casta, about 90 km east of Lima. Access from the capital takes between 3 and 4 hours by car and requires taking the Carretera Central to Chosica, then turning towards Santa Eulalia and finally going up an unpaved track to San Pedro de Casta.
The territory of Marcahuasi lies between 3,800 and 4,100 m altitude. The climate is typical of high mountains: during the day, the sun is intense and temperatures can exceed 20°C, while at night they frequently drop below 0°C. The dry season (May to October) offers clear skies ideal for camping and stargazing; the rainy season (November to April) brings greener landscapes but a higher probability of precipitation.
Marcahuasi combines nature, archaeology, and an atmosphere steeped in mysticism. Its trails lead to formations such as the Monument to Humanity — a human profile sculpted by nature — and the Amphitheater, a sheltered space that once served as a campsite and now houses a small lagoon. Moreover, its night sky, free from light pollution, allows observation of the Milky Way with great clarity, attracting photographers and astronomy enthusiasts. Accounts of strange light sightings have added an extra appeal for ufology tourism enthusiasts.
Take the Carretera Central to the Chosica district. From there, continue towards Santa Eulalia and follow the road leading to San Pedro de Casta (about 35 km of unpaved track). The road is winding but passable for standard vehicles, although caution is recommended during the rainy season. From San Pedro de Casta, the final ascent to the plateau (about 4 km) can be done on foot or, if the track condition allows, with 4×4 vehicles.
Total duration: 3h30 – 4h.
Parking: in San Pedro de Casta, areas are provided for leaving vehicles (indicative cost S/ 5–10).
It is also possible to hire muleteers with donkeys to transport camping gear (about S/ 20).
Several agencies in Lima organize weekend or day trips to Marcahuasi, including transportation, a guide, and in some cases camping equipment. This is a recommended option for those who prefer not to handle logistics or who are traveling alone.
San Pedro de Casta, the gateway village to Marcahuasi (at about 2,800 m altitude), has a few services for visitors who wish to acclimatize before the ascent or rest after the descent.
On the main square and in its surroundings, you will find small family restaurants offering typical Andean dishes:
Some establishments also prepare packed lunches for the ascent (sandwiches, dried fruit, drinks). Ideal for those who don't want to carry everything from Lima.
The village offers several simple accommodations for those who prefer to sleep at a lower altitude (about 2,800 m) before climbing to the plateau:
This is the most favorable period for camping and outdoor activities. Days are generally sunny, nights cold and clear, allowing excellent observation of the starry sky and the Milky Way. Nighttime temperatures can drop below 0°C, so appropriate equipment is necessary.
The landscape becomes greener and lagoons rise, but rains can make the ascent and camping difficult. Paths become slippery and the sky is often cloudy, reducing opportunities for astronomical observation. If you travel during this period, it is essential to bring waterproof clothing and check forecasts before leaving.
The Marcahuasi plateau is organized into three color-coded circuits (red, green, and blue), allowing visitors to explore the most emblematic formations. The main points of interest are:
The most photographed formation in Marcahuasi. It is a huge granite rock that, when viewed from a certain angle, reveals a human profile with defined features. It is the mystical icon of the plateau.
Once a preferred camping spot due to its large rock walls protecting from the wind, this area has now formed a lagoon after years of water accumulation, reflecting the surrounding formations and creating a landscape of great beauty.
The highest point on the plateau. From here, you get a 360-degree panoramic view of the Santa Eulalia valley and the rest of the highlands. At the summit is a monolith that some consider a ceremonial altar.
A small naturally occurring lagoon in the central part of the plateau. Its waters are greenish and, on clear days, it reflects the sky. It is a peaceful spot, ideal for resting during the walk.
A narrow passage between rocks where the wind produces a characteristic whistling sound. According to local beliefs, this is a point of strong energy, often included in mystical tours.
Various locations on the plateau contain remains of pre-Hispanic funerary structures (chullpas) and fragmented pottery, evidence of human occupation long before the arrival of the Incas.
The trails of Marcahuasi are of moderate difficulty, with gentle but noticeable elevation changes due to the altitude. It is advisable to walk slowly, stay hydrated, and protect yourself from the sun. The routes are marked and do not require a mandatory guide, although hiring a local guide can enrich the experience with historical and mystical stories.
Camping at Marcahuasi is a unique experience. The site allows tent setup in several areas, especially near the Amphitheater or in flat spaces close to the formations. There are no drinking water or electricity services, so you must bring everything you need: wind-resistant tent, sleeping bag for sub-zero temperatures, headlamp, food, and sufficient water (at least 2 L per person per day).
In the camping area, during weekends and public holidays, small stalls offer tent rentals (S/ 25–40), mattress rentals (S/ 10), firewood (S/ 15), and simple meals (starting from S/ 15). There are also public toilets (S/ 1).
Marcahuasi is one of the best places in the Lima highlands for astronomical observation thanks to its altitude, clear sky, and absence of light pollution. You can observe the Milky Way with the naked eye, as well as the constellations of the southern hemisphere. Some local organizations offer astrophotography workshops and guided telescope observation sessions, especially during the dry season and new moons.
Since the 1970s, Marcahuasi has been the setting for accounts of mysterious lights in the night sky. Although there is no scientific evidence, many visitors report phenomena that fuel the site's mystical aura. Groups of enthusiasts organize nighttime vigils to observe the sky and share their experiences.
Payment is made at the tourist office located opposite the square in San Pedro de Casta. A brochure with the circuit map is provided.
There is no scientific evidence, but accounts of strange lights have been recurrent for decades. The dark sky and mystical atmosphere of the place mean that many visitors report unusual experiences. For those interested, nighttime vigils during new moons are the most favorable.
No, the circuits are marked and a map is provided. However, a local guide can provide historical information and details about formations that do not appear in the brochures.
You can reach the parking area about a 30-minute walk from the camping zone. The last section is an unpaved track; during the dry season, it is passable for cars, but caution is recommended.
No, only camping is permitted. In San Pedro de Casta, there are simple accommodations starting from S/ 30 per night for those who prefer to sleep at a lower altitude.
With a full day, you can visit the main points. For a more relaxing experience and to enjoy the sunset and night sky, it is recommended to spend a night camping.