"In addition to being a symbolic representation of male genitalia, it was also at times used for knapping flints," explained Professor Nicholas Conard, from the department of Early Prehistory and Quaternary Ecology, at Tübingen University.
The 20cm-long, 3cm-wide stone object, which is dated to be about 28,000 years old, was buried in the famous Hohle Fels Cave near Ulm in the Swabian Jura.