Scientists analyzing 6,000-year-old skeletons discovered in Bogotá's Altiplano region have identified a previously unknown human lineage with no known ancestors or descendants. These nomadic hunter-gatherers lived in forests and valleys, but their origins and disappearance remain a mystery. The findings challenge the understanding of South America's ancient populations, as this lineage differs from the known northern and southern indigenous groups. Researchers aim to uncover more archaeological evidence to reveal the life and culture of this lost civilization.