Each year since the 1980 eruption of Mt. St. Helens, NASA has captured imagery of the area using one of their Landsat satellites. Over the course of those 30 years, you can watch how the earth slowly reclaims the land that was destroyed in the eruption.
If you want to see the imagery inside of Google Earth, you can use this KMZ file(27MB), or watch the video below which shows all of the images from 1979 through today.
If you want to see the imagery inside of Google Earth, you can use this KMZ file(27MB), or watch the video below which shows all of the images from 1979 through today.