circa 1920: An expedition unearthing the bones of prehistoric creatures. Professor E S Riggs was the leader of the 2nd Captain Marshall Field Palaeontologies Expedition into the wilds of South America for the Natural History Museum of Chicago. (Photo by Hulton Archive/Getty Images)
Published: 2004-04-09 Provider: ViewImages
Keywords: Vertical, Exploration, Males, Black And White, Lifestyles, Human Bone, Animal, Cave, Archaeology, Unearthing, Arts Culture and Entertainment, Exploration & Adventure, H/EXP/EXCA, H 123508 BOX 3496 5/4,