National Geographic is an American magazine that is noted for its cover stories and accompanying photography. Throughout the 1970s National Geographic's cover stories showcased global historical events such as the volcanic eruption of Eldfell at Heimaey island in Iceland. Cover stories included articles written by notable writers such as Robert Redford, Rick Gore, and Paul A. Zahl. Cover photos were published by notable photographers such as Emory Kristof, Winfield Parks and Joan Root.