A team of researchers led by Sergio Couto has uncovered a wealth of medieval artifacts in the nests of bearded vultures across southern Spain. The findings, released in the journal *Ecology* on September 11, shed light on the region’s historical and ecological significance. These nests, located in the mountain ranges of Andalusia, have proven to be natural time capsules, preserving items from hundreds of years ago.
The study reveals that the nests have preserved a variety of materials, including a complete 13th-century esparto sandal made from the native Mediterranean grass. Alongside this, the researchers found a fragment of tanned, painted leather resembling a mask, an 18th-century piece of basketry, and a crossbow arrow. They also uncovered ropes, horse tack, and thousands of bone fragments and eggshells, which belonged to hooved animals, a primary part of the vultures’ diet.
The discovery has provided valuable insights into the use of plant fibers in the Iberian Mediterranean since the Epipaleolithic era, around 12,000 years ago. The eggshell remains are also being studied for comparative toxicological analysis to understand pesticide exposure and the history of the bearded vulture’s extinction in the region. These findings may play a critical role in efforts to recover the species in Europe.
The research has been credited to the stable temperature and humidity conditions of the caves, which have helped preserve the artifacts in excellent condition. Stratigraphic studies of these nests are expected to enrich our understanding of regional ecology and provide details about local ethnographic, historical, and biocultural contexts. The study comes months after similar discoveries were made in Norway, where archaeologists unearthed thousands of leather artifacts, including shoes, in Oslo.
Marja-Liisa P. Grue, an archaeologist involved in the Norway study, commented on the significance of these finds, noting that the shoes had been protected in ‘moist and oxygen-deprived masses for hundreds of years.’ These discoveries underscore the importance of natural preservation in uncovering ancient secrets and offer new perspectives on the material culture of past societies.