A Remarkable Discovery: The Red Lady of El Mirón

Around 19,000 years ago, a prehistoric woman was laid to rest inside El Mirón Cave, a vast rock shelter in northern Spain. When archaeologists uncovered her remains in 2010, they found them covered in red ochre, an iron-rich pigment. This striking burial led to her being called the "Red Lady of El Mirón." Since then, this extraordinary find has deepened our understanding of Ice Age human populations, with ongoing advances in DNA research continuing to shed light on the ancient groups that lived in the region before and after her time.

Unlocking Secrets with Sedimentary DNA

Traditionally, genetic studies of ancient humans rely on extracting DNA from bones or teeth. However, a groundbreaking study published in Nature Communications has demonstrated the power of sedimentary ancient DNA (sedaDNA)—genetic material preserved in soil—to provide key insights into prehistoric life. Led by researchers Pere Gelabert and Victoria Oberreiter from Professor Ron Pinhasi’s lab at the University of Vienna, in collaboration with Lawrence Straus from the University of New Mexico and Manuel González Morales from the University of Cantabria, the study revealed a dynamic picture of human and animal presence in El Mirón Cave over thousands of years.

By analyzing sedaDNA, researchers identified genetic traces of species not previously recorded through excavations, including hyenas, leopards, and Asiatic dholes—wild dogs now found only in parts of Asia. This technique allows scientists to reconstruct past ecosystems even in the absence of well-preserved skeletal remains, significantly expanding our knowledge of ancient environments.

Tracing Human Ancestry Through Time

One of the study’s most significant revelations is the genetic heritage of the humans who once inhabited the cave. DNA evidence indicates that the Solutrean artisans who lived in El Mirón during the Last Glacial Maximum (approximately 25,000–21,000 years ago) were part of the "Fournol" genetic lineage. Previously identified in remains from France and Spain, this lineage suggests that Ice Age hunter-gatherers migrated southward in response to extreme climate conditions.

Over time, these populations mixed with another genetic group known as "Villabruna," which arrived from the Balkans via northern Italy during the Magdalenian period. The Red Lady of El Mirón’s genetic makeup reflects this blending, highlighting a continuous exchange of genes and cultures over millennia.

A Window Into the Ice Age Environment

El Mirón Cave has long been a critical site for studying human activity during the Upper Paleolithic. The latest sedaDNA analysis strengthens its significance, offering an uninterrupted genetic record spanning over 46,000 years. This record captures the transition from Neanderthals during the Mousterian period to modern humans in the Magdalenian.

Beyond human DNA, the study also recovered mitochondrial genomes from Ice Age megafauna, including woolly mammoths, rhinoceroses, and reindeer. These findings contribute to a broader reconstruction of prehistoric European ecosystems, illustrating how both humans and animals adapted to shifting climatic conditions.

Looking Ahead: The Future of SedaDNA Research

The success of sedaDNA analysis at El Mirón opens exciting new avenues for exploration. Researchers are now setting their sights on the next breakthrough—extracting nuclear DNA from sediments. This advancement could provide even deeper insights into ancient human populations, their migrations, and their interactions with the environment.

The ongoing study of El Mirón Cave continues to reshape our understanding of Ice Age societies, offering a fascinating glimpse into the lives of those who once roamed prehistoric Europe.