Devastation and Recovery at Mt. St. Helens : Feature Articles - http://earthobservatory.nasa.gov/Feature...
May 22, 2010
from
"In the three decades since the eruption, Mt. St. Helens has given scientists an unprecedented opportunity to witness the intricate steps through which life reclaims a devastated landscape. The scale of the eruption and the beginning of reclamation in the Mt. St. Helens blast zone are documented in this series of images captured by NASA’s Landsat series of satellites between 1979 and 2009. The older images are false-color (vegetation is red) because earlier Landsats could not “see” blue light."
- Keith Pelczarski