The story of Mount St. Helens is that of an active volcano and human interaction with it. The mountain is culturally important to the regional native people. Its Cowlitz name, Lawetlat'la, means "Person From Whom Smoke Comes." Early European settlers saw opportunities to make a living from the natural resources, and people fell in love with the forested valleys and slopes of the glacier-clad peak with the blue lake at its foot. Forgotten were the eruptions of the 19th century and the fact that the landscape was a product of frequent violent explosions. A report from the 1970s reminded locals...