In a cave high in the Calabrian mountains, ancient bones have revealed an astonishing discovery: a child born of a father-daughter union over 3,700 years ago. This finding, backed by DNA analysis, is the earliest confirmed case of this kind in prehistoric Europe.
The bones come from Grotta della Monaca, a burial cave that housed the remains of 23 people who lived between 1780 and 1380 BCE. Researchers worked to uncover family ties and daily life from this silent community.
Using shared DNA, scientists mapped out family connections. One child’s genome raised alarms; the boy had too many identical genetic blocks for anything but a parent-child relationship. The study, led by Dr. Francesco Fontani at the University of Bologna, concluded that this child was indeed the product of a father-daughter pairing. While the mother’s remains remain unidentified, the DNA told a vivid story.
Interestingly, burials in this cave showed that families were buried close together, with mothers near their children. One area contained mostly women and young people, with just a single adult male present.
Despite its secluded location, the community at Grotta della Monaca had strong connections beyond its hills. “Our analysis shows that the Grotta della Monaca population shared strong genetic affinities with Early Bronze Age groups from Sicily,” Fontani mentioned. However, they lacked some eastern Mediterranean influences seen in Sicilian communities of the time. The study, published in Communications Biology, also highlighted connections to northeastern Italy, indicating that people traveled long distances even through rough terrains.
This cave served as a long-term burial site, allowing researchers to trace how family structures and cultural practices evolved over centuries. It provided a unique window into the lives of its inhabitants.
Another surprising finding relates to diet. Most adults lacked the gene for digesting milk, yet their bones indicated regular dairy consumption. So, how did they handle it? Likely by turning milk into yogurt or cheese, which are easier to digest. Dr. Donata Luiselli, one of the study’s senior authors, noted that this shows cultural adaptations occurred before genetic changes. Despite their bodies lacking the ability for dairy digestion, this small community thrived on herding and dairy products.
This discovery highlights the resources humans can tap into while adapting to their environment—a testament to cultural creativity and resilience. Yet, as Dr. Alissa Mittnik of the Max Planck Institute for Evolutionary Anthropology points out, the full significance of these findings remains unclear, inviting further exploration.

