An almost forgotten archaeological site in the Andes is currently attracting international attention. T’aqrachullo near Cusco is not a newly discovered Inca fortress. However, new research suggests that its significance may have been significantly underestimated until now.
At an altitude of over 4,000 meters, a massive archaeological site rises in the province of Espinar. Hundreds of buildings, ceremonial areas, tombs, and paths are spread across the high-altitude landscape. For a long time, T'aqrachullo remained in the shadow of well-known sites such as Machu Picchu and Sacsayhuamán. However, new investigations and international reports have now brought the site more into public focus.
One question, in particular, occupies archaeologists: Could T'aqrachullo be identical to Ancocagua, an important sanctuary mentioned in historical sources? There is no definitive answer yet. However, the research results to date show that T'aqrachullo was much more than an ordinary Inca settlement.
T'aqrachullo is located south of Cusco
T'aqrachullo is located in the Suykutambo district in the Espinar province of the Cusco region. The site is situated at an altitude of approximately 4,100 meters and covers about 17 hectares. More than 500 archaeological structures have been documented. A detailed inventory lists 544 structures in five sectors.
These include round and rectangular buildings, semicircular structures, and buildings in a characteristic D-shape. There are also terraces, stairs, walls, water systems, and so-called Kallankas. These large rectangular Inca buildings could be used for assemblies, administration, and ceremonial purposes, among others. Chullpas and other burial sites are also part of the archaeological complex.
Not a "lost Inca fortress" discovered in 2026
Some international headlines give the impression that archaeologists have only just discovered T'aqrachullo. This is not true. The archaeological site has been known for decades. Peru declared T'aqrachullo a national cultural heritage site as early as 2010, while archaeological investigations date back even further.
What is new is the growing knowledge about the site's actual significance. Over the years, numerous buildings have been investigated, preserved, and restored. The Peruvian cultural authority reports more than 300 restored archaeological constructions.
T’aqrachullo is older than the Inca Empire
The site's long history is particularly interesting. T'aqrachullo did not simply emerge as a new Inca city. Archaeological traces show a much longer settlement, encompassing various cultural epochs of the southern Andes. Later, the Incas integrated the strategically and religiously significant site into their empire.
In doing so, they partly built upon existing structures and added new buildings, paths, and ceremonial structures. This created an architectural mix of different epochs. T'aqrachullo therefore does not exclusively document the history of the Incas.
Why was T'aqrachullo so important?
Its location was likely no coincidence. T'aqrachullo is situated on a natural plateau in an extraordinary landscape. The Tres Cañones de Suykutambo are in the immediate vicinity. From the site, the surrounding area can be viewed over long distances.
This strategic location partly explains the frequently used designation as a fortress. However, a purely military interpretation is likely too narrow. The multitude of ceremonial and religious structures suggests political, administrative, and religious functions.
Was T'aqrachullo the mysterious Ancocagua?
Historical sources mention an important sanctuary called Ancocagua. For a long time, it was unclear which currently known archaeological site could be associated with this name. Now, T'aqrachullo has moved more into the focus of research as a possible candidate.
Archaeologists are investigating whether historical descriptions, geographical location, and archaeological finds correspond. A definitive identification has not yet been made. Therefore, it would be incorrect to already refer to T'aqrachullo as the rediscovered Ancocagua.
Thousands of metal finds provide new clues
Archaeological work in 2022 provided an important clue. Researchers found thousands of small metal plates made of gold, silver, and copper. Peruvian reports mention around 3,000 artifacts. However, this is not a classic buried gold treasure.
The small metal pieces could have been components of high-quality clothing or ceremonial garments. The finds could therefore indicate the presence of high-ranking individuals or religious specialists.
A look at the sky
Among the most extraordinary areas is the ceremonial sector of Yuractorriyoc. There, carved depressions and water basins are found in the rocks. They could store water, and some of them may also have had a religious or astronomical function.
Is T’aqrachullo really bigger than Machu Picchu?
With the new attention, a spectacular claim quickly spread: T'aqrachullo is several times larger than Machu Picchu. This statement is problematic. Archaeologists in Peru have explicitly contradicted such comparisons.
T'aqrachullo has an archaeological area of approximately 17 hectares. For Machu Picchu, however, the area depends on which part is used for comparison.
More than 300 buildings have been restored
The current state of the site is the result of a multi-year restoration project by the Peruvian Ministry of Culture. Extensive work served to investigate, secure, and preserve numerous archaeological constructions.
Suddenly, significantly more visitors arrive
The international attention has already had consequences. In 2026, T'aqrachullo quickly developed from a little-visited archaeological site into a new excursion destination in the Cusco region. More visitors also mean additional strain on the centuries-old structures.
T’aqrachullo is to be further developed for tourism
So far, Espinar has not been one of the classic destinations for international Cusco visitors. T'aqrachullo could permanently expand the traditional route around Cusco, the Sacred Valley, and Machu Picchu with a completely different destination.
The place combines archaeology with an extraordinary high Andean landscape. In addition, the Tres Cañones de Suykutambo are in the immediate vicinity.
Not a second Machu Picchu
While the comparison with Machu Picchu attracts attention, it hardly does justice to T'aqrachullo. Both sites have different histories and presumably had different functions. It is precisely the many unanswered questions that make T'aqrachullo interesting for research.
T'aqrachullo is not a "lost Inca fortress" that was suddenly discovered in 2026. Archaeologists may only just be beginning to understand the true significance of this long-known site.
Frequently Asked Questions about T'aqrachullo
Where is T'aqrachullo located?
T'aqrachullo is located in the Suykutambo district of Espinar province in the Cusco region. The archaeological site is situated at an altitude of approximately 4,100 meters.
Was T'aqrachullo only discovered in 2026?
No. The archaeological site has been known for decades and was declared a Peruvian cultural heritage site in 2010.
Has it been proven that T'aqrachullo is Ancocagua?
No. This is currently a scientific hypothesis.
Can you visit T'aqrachullo?
T'aqrachullo is already visited. Due to its location at approximately 4,100 meters, travelers should allow sufficient time for altitude acclimatization.
Sources and Image Credits
Text sources: Ministerio de Cultura del Perú; Dirección Desconcentrada de Cultura de Cusco; Agencia Peruana de Noticias Andina; National Geographic; RPP Noticias.
Image credits: Ruins of María Fortaleza (Taqrachullo) 01, 02 and 03 – Photographer: YanelaSh, Wikimedia Commons. License: Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0). The versions used in the article have been scaled for web display. Original files and license information: Wikimedia Commons, Category María Fortaleza.
Status: August 2026