by Melanie and Jim
Geologists tell us Mt. St. Helens started its eruptive life over 37,000 years ago. It went through quiet periods between four major eruptive periods. The most recent in 1980, the modern eruptive period, was witnessed by residents nearby and by viewers the world over. Details of the eruption can be found at this link, in case you missed it. We traveled south on Interstate 5 toward Portland, OR, and took route 504 toward the visitor center at Johnston Ridge Observatory. To give a sense of scale, it is 5 miles from the Observatory (green marker in the upper right quadrant) to the crater at lower right. Click the picture to see details.