The Celtic culture of the pre-Roman Iron Age in Western and Central Europe has left numerous traces to this day, not least in the form of enormous burial mounds and spectacular archaeological artifacts. Despite this rich legacy, much about this civilization remains hidden from us. In a collaboration between the State Office for the Preservation of Historical Monuments in Baden-Württemberg and the Max Planck Institute for Evolutionary Anthropology (MPI-EVA) in Leipzig, Germany, the genomes of Celtic individuals from several burial mounds have now been reconstructed for the first time.