A new dome started growing on October 18,1980. This aerial view is from the north.
Sulfur covers rocks around the crater floor.
Mount St. Helens dome grows in different ways. From 1980 through 1982 it grew in periodic extrusions of stubby lava flows, called lobes. Perioidic lobe growth, along with endogenous growth, resumed in early 1984. A spreading center is the area from which new lava slowly emerges during lobe growth. Large boulder which fell off dome.