The discovery was made at the Wankasanga archaeological site in the Condiobamba Valley, in Cajabamba Province, at an elevation of approximately 3,400 metres.
Researchers from the Wankasanga 2026 Archaeological Project identified a group of circular structures believed to have functioned as kolkas, storage facilities used by the Inca state for food and other essential supplies.
The discovery provides a glimpse into the architectural and logistical systems that allowed the Inca state to manage resources across the challenging mountainous landscape of the Andes.
Twelve Circular Structures Discovered
The 2026 investigation represents the first systematic archaeological survey of Wankasanga.
Researchers have focused on Sector C, where excavations uncovered 12 circular structures arranged in a regular crescent-shaped formation around the periphery of the settlement.
Their form and arrangement have led archaeologists to propose that the buildings were used as storage facilities, or kolkas.
Kolkas played an important role in the Inca administrative and logistical system by providing locations where food and other vital supplies could be stored.
The discovery of an associated ventilation structure strengthens the interpretation of the complex as a deliberately organized storage facility.
Ancient Ventilation Channels
Near the circular structures, archaeologists discovered a separate building containing two carefully constructed ventilation channels.
The channels were constructed using side walls made from hewn and partially worked stone blocks. Large stone slabs were apparently placed across the walls to create a roof.
According to archaeologist Osvaldo Eseta Latoce, the arrangement allowed air to circulate through the facilities.
Such airflow could have helped regulate conditions inside storage areas and protect stored products from unfavourable environmental conditions.
The ventilation system is particularly significant because similar features have already been identified at other Inca storage facilities associated with the Capac Ñan, the extensive road network that connected different territories of the Inca Empire.
Natural Winds May Have Powered the System
The location of the structures appears to have been an important part of the design.
According to archaeologist Jerry Solano Calderón, the buildings are positioned at the western end of Sector C, an area exposed to stronger winds.
Those natural winds may have helped drive air through the ventilation channels.
This suggests that the builders were not simply constructing storage buildings wherever space was available.
Instead, the combination of the site's exposure, ventilation channels and organized arrangement of storage structures indicates that the complex may have been deliberately planned around local environmental conditions.
The Andes presented significant challenges for transporting and preserving resources, making the efficient use of naturally available airflow potentially valuable for an administrative storage centre.
Pottery Provides Evidence of Inca Use
Additional evidence for the proposed Inca date comes from pottery discovered inside one of the presumed storage buildings.
Archaeologists recovered fragments of an ariballo, a ceramic vessel characteristic of the Inca period.
The pottery supports the hypothesis that the complex was constructed or used during the Inca period.
However, the supplied source does not provide a more precise date for the structures or explain whether the complex was exclusively Inca in origin.
The ariballo fragments nevertheless provide an important archaeological clue linking the storage facilities with the Inca period.
What Were Kolkas Used For?
Kolkas were storage facilities associated with the Inca state.
The structures allowed supplies to be collected, stored and managed as part of a broader administrative and logistical system.
At Wankasanga, the circular structures, their organized arrangement and the nearby ventilation infrastructure suggest that the site may have played such a logistical role.
The discovery is therefore important not simply because of the individual buildings, but because it could reveal how the Inca state managed resources at high altitude.
Researchers hope future work will clarify the precise role of Wankasanga within the wider administrative network.
Wankasanga and the Inca Administrative Landscape
The Wankasanga site is located in the Condiobamba Valley of northern Peru.
Researchers are investigating how the settlement may have been connected with nearby archaeological locations, including Ichabamba.
The project aims to determine the role of Wankasanga within the Inca administrative and logistical system.
Understanding these relationships could help archaeologists reconstruct how resources, people and information moved through the mountainous landscape.
The site's location at approximately 3,400 metres makes its infrastructure particularly interesting because the complex appears to have incorporated local environmental conditions into its design.
Research Resumes After More Than Three Decades
The 2026 investigation builds on research carried out in 1989 by architect José Pineda Quevedo.
His study of settlement patterns in the Condiobamba Valley helped establish the division of Wankasanga into separate archaeological sectors.
More than 30 years later, archaeologists have returned to the site to conduct systematic research in Sectors C and D.
The current project brings together specialists from several fields, including archaeology, anthropology, conservation and communications.
The multidisciplinary team includes archaeologists Osvaldo Eseta and Diana Agapito Torres, anthropologist Ani Vega Fajardo, conservation specialist Susie Esquivel Valverde and communications specialist Felipe Arroyo Cornejo.
Local residents from Chauchabamba are also participating in excavations and educational activities connected with the project.
An Ancient Example of Environmental Engineering
Perhaps the most striking aspect of the discovery is the apparent relationship between architecture and the natural environment.
Rather than relying solely on enclosed storage buildings, the Wankasanga complex appears to have incorporated ventilation channels and naturally strong winds into its design.
If the interpretation is confirmed, this would demonstrate a practical understanding of airflow and environmental conditions in the management of stored resources.
The evidence does not establish exactly which products were stored at Wankasanga or precisely how the ventilation system operated in practice.
Nevertheless, the architectural arrangement suggests that environmental conditions were considered when the complex was planned.
Why the Discovery Matters
The Wankasanga discoveries could help researchers better understand the logistical infrastructure that supported the Inca state.
The combination of:
- 12 circular structures;
- a separate building with two ventilation channels;
- an organized crescent-shaped layout;
- exposure to strong natural winds; and
- Inca-period pottery
provides a compelling basis for investigating the site as a storage and administrative complex.
The discovery also demonstrates how archaeological research can reveal sophisticated infrastructure without relying on monumental architecture alone.
A carefully designed ventilation system may have been just as important to the functioning of an Inca logistical centre as the buildings themselves.
What Happens Next?
Researchers plan to continue studying Wankasanga and its relationship with nearby archaeological sites.
Future work may clarify the function of the circular structures, determine how the ventilation channels operated and establish the site's role within the wider Inca administrative network.
Researchers also hope to understand the relationship between Wankasanga and sites such as Ichabamba.
The participation of local residents in excavation and educational programmes is another important component of the ongoing project.
Conclusion
Archaeologists investigating Wankasanga in northern Peru have uncovered a probable Inca storage complex at 3,400 metres above sea level, featuring an unusual system designed to promote air circulation.
Twelve circular structures arranged in a crescent formation may have served as kolkas, while nearby ventilation channels appear to have been designed to take advantage of the area's strong winds.
Fragments of an Inca ariballo provide additional evidence supporting the proposed Inca-period use of the complex.
Although researchers have not yet established every detail of the site's function, the discovery offers a fascinating glimpse into how the Inca state may have combined architecture, environmental knowledge and strategic planning to manage resources across the Andes.
Future research could reveal just how important Wankasanga was within the wider logistical network that helped sustain one of the largest states in pre-Columbian South America.
FAQ
Where was the Inca storage complex discovered?
It was discovered at the Wankasanga archaeological site in the Condiobamba Valley of Cajabamba Province, northern Peru.
How high is Wankasanga?
The archaeological site is located at approximately 3,400 metres above sea level.
What did archaeologists discover?
Researchers uncovered 12 circular structures believed to be kolkas, or Inca storage facilities, along with a separate structure containing two ventilation channels.
How did the ancient ventilation system work?
The channels appear to have allowed air to circulate through the facilities. Researchers believe strong natural winds at the western end of Sector C may have helped drive the airflow.
What evidence connects the complex to the Incas?
Fragments of an ariballo, a ceramic vessel characteristic of the Inca period, were discovered inside one of the presumed storage structures.
What were kolkas?
Kolkas were storage facilities used by the Inca state to store food and other essential supplies.
Does the discovery prove the structures were built by the Incas?
The pottery supports the hypothesis that the complex was built or used during the Inca period. The supplied source does not establish the exact construction date or provide evidence sufficient to distinguish between construction and later Inca use.
When did systematic research at Wankasanga begin?
The current systematic investigation began with the Wankasanga 2026 Archaeological Project, building on earlier research conducted in 1989 by José Pineda Quevedo.
What is being investigated next?
Researchers hope to clarify Wankasanga's role in the Inca administrative and logistical system and its connections with nearby archaeological sites such as Ichabamba.
