Sixty million years ago, in the era after the mass extinction of the dinosaurs, scientists believe that a colossal snake related to modern boa constrictors thrived in a hot tropical climate. Slithering in at 48 feet long and weighing an estimated one-and-a-half tons, a realistic replica of the world’s largest snake is on exhibit at the Smithsonian’s National Museum of Natural History until Jan. Eliot Elisofon Photographic Archives, African Art.
