Walking the Ancient Land (IMAGE) University of Arizona Caption One of the last hunter-gatherer tribes on Earth, the Hadza people of Tanzania still hunt on foot with traditional foraging methods. "If you want to understand human hunter-gatherer movement, you have to work with a group like the Hadza," said UA anthropologist David Raichlen, who led the study. Credit Brian Wood/Yale University Usage Restrictions Image may be used only with credit given as follows: Brian Wood/Yale University License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.