This peak is #99 on the Height List for Washington . This peak is #11 in Prominence List for Washington .At 8:32 am, on May 18th, 1980, an earthquake caused an enormous landslide on Mount Saint Helens, one of the many volcanoes that line the Cascade Range. The top 400 m of the mountain crashed down onto the wilderness to the north. Pressurized gas and steam that had built up inside the volcano was released in a massive blast that toppled 600 square kilometers of trees and could be heard as far as Vancouver BC. Winds carried the volcanic ash eastward and blacked out the sky in central Washington. Several small glaciers melted and created hot mud flows that buried part of Spirit Lake and the North Fork of the Toutle River.
Mount Saint Helens had been dormant for over a century, although in the weeks before the eruption, scientist definitely knew that something might happen. Most people were evacuated, but one geologist remained, on what is now Johnston Ridge named in his memory, at the time of the blast. In total, 57 people lost their lives while others narrowly escaped death.
Today, the area surrounding the mountain is a park. Permits are required to climb the peak and the number that can climb in any given weekend is restricted. Reaching the summit is a moderate, non-technical climb up 1400 meters over 9.3 kms to the top of North America's most infamous volcano. The summit offers great views of the 600-meter-deep crater and the lava dome. Before the eruption, the summit elevation was 2950 m.