All photographs copyright (2003-2013) by Kris H. Light

Scientists study tree growth rings from ancient trees that grew far from Mt. Saint Helens to learn about past eruptions. For several years after an eruption, growth of the trees slowed, causing the tree rings to be small and close together. This sectio...
Scientists study tree growth rings from ancient trees that grew far from Mt. Saint Helens to learn about past eruptions. For several years after an eruption, growth of the trees slowed, causing the tree rings to be small and close together. This section was in the visitor center at Silver Lake.

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