Footprints made by early humans millions of years ago have been uncovered in Tanzania close to where similar tracks were found in the 1970s.
The impressions were made when some of our distant relatives walked together across wet volcanic ash.
Their makers, most likely Australopithecus afarensis, appear to have had a wide range of body sizes.
Scientists say this gives clues to how this ancient species of human lived.
Australopithecus afarensis is one of the longest-lived and best-known early human species.
The fossil of "Lucy", a young adult female who lived in Ethiopia 3.2 million years ago, is perhaps the most famous individual.
The newly discovered footprints may have been made by a male walking with smaller females.
Â