Eight hundred million years ago, a vast supercontinent called Gondwana held much of the southern hemisphere together in a configuration the modern eye would not recognize. Researchers have now found geological fingerprints embedded in ancient rocks — distinctive markers of composition, structure, and mineral content — that confirm not merely Gondwana's existence but the specific character of its assembly and eventual fragmentation. This discovery deepens humanity's long effort to read the planet's autobiography, moving our understanding of plate tectonics from inference toward something closer