High in Spain’s eastern Pyrenees, a cave called Cova 338 sits at 2,235 meters above sea level — reachable only on foot through the Núria Valley, and largely ignored by the archaeological record until recently. For decades, the prevailing assumption held that prehistoric people rarely ventured above 2,000 meters, treating these altitudes as marginal terrain visited only in passing.
Excavations carried out between 2021 and 2023 are now challenging that view. Researchers uncovered dense, stratified layers of human activity spanning roughly 4,000 years, suggesting ancient communities returned to this remote cave not by accident, but with purpose.
A cave that defies altitude assumptions
Cova 338 now holds a notable distinction: it’s the highest-altitude prehistoric cave in the Pyrenees with strong evidence of repeated human occupation. Located in the Núria Valley near Queralbs in northeastern Spain, it was excavated between 2021 and 2023 by a team led by researchers from the Universitat Autònoma de Barcelona and IPHES-CERCA, with findings published in Frontiers in Environmental Archaeology.
The archaeological layers inside document a record running from the early 5th millennium BCE to the late 1st millennium BCE — roughly 4,000 years of intermittent but deliberate return. These weren’t casual stopovers. Excavations revealed repeated occupation episodes separated by quieter intervals, a pattern consistent with planned, seasonal use rather than opportunistic shelter-seeking.
That finding cuts against a long-standing assumption in the field. Zones above 2,000 meters were broadly treated as marginal — terrain prehistoric people might cross, but not meaningfully occupy. Cova 338 suggests that assumption needs revisiting.
Copper minerals, hearths, and organized space
The material record inside the cave is notably varied. Researchers uncovered hearths, pottery fragments, stone tools, animal bones, and crushed green mineral fragments identified as malachite — a copper-bearing mineral. It appears to have been carried to the cave deliberately and processed on-site, placing Cova 338 among the earliest known examples of high-altitude mineral exploitation in Europe.
The concentration of these fragments near combustion areas points to mineral processing as a recurring activity, particularly during the Late Neolithic and Bronze Age occupation phases.
Beyond resource extraction, the cave shows evidence of sustained daily life. Faunal remains indicate food consumption on-site, and pit structures alongside tool maintenance traces suggest groups stayed long enough to carry out multiple tasks. Spatial analysis of the cave interior identifies distinct activity zones — a sign of organized use, not improvised shelter. These were people who set up, worked, and came back.
Personal objects and human remains hint at deeper meaning
Not everything recovered from Cova 338 was functional. Among the finds were two personal ornaments: a pendant made from a marine shell of the genus Glycymeris, and another fashioned from a brown bear tooth — objects brought into a demanding environment because they carried meaning, not utility.
Human remains were also present, including those of at least one child. Their discovery raises the possibility that the cave served funerary purposes during certain occupation phases, adding a dimension that extends well beyond seasonal resource use.
Taken together, these finds suggest Cova 338 held genuine cultural significance for the communities that returned across millennia. Not simply a logistical waypoint — it was a place where people brought their belongings, their dead, and likely their rituals.
Excavating at the edge: the challenges and what comes next
Working at 2,235 meters presents real constraints. The site is accessible only on foot from the Núria Valley, with no motorized transport permitted, meaning every piece of equipment — and every bag of excavated sediment — had to be carried in and out by hand. Despite those conditions, the team applied systematic modern methods: 3D recording, sediment sampling, flotation, and fine recovery techniques designed to capture small organic remains.
That methodological rigor matters. Most comparable high-altitude sites in the Pyrenees are small rock shelters with limited sediment and fragmentary records. Cova 338 preserved a deep, stratified sequence — the kind of layered archive that allows researchers to trace change over time with confidence, which is uncommon at this elevation.
Future excavations will push that analysis further. Teams plan to examine pollen, charcoal, seeds, and faunal remains to reconstruct the mountain environment during the cave’s long period of use, while also working to identify the precise geological source of the malachite and clarify how it was processed.
What Cova 338 ultimately asks us to reconsider isn’t just one site, but a broader understanding of where prehistoric people lived and worked. Mountains above 2,000 meters weren’t empty margins on their landscape. They were destinations — places worth the climb, worth returning to, and, for some, worth dying in. How many other high-altitude sites, still unexcavated, hold comparable records?