Season 27 Episodes20
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Legacy of a Volcano
May 14, 199060 min
Horizon looks at the area around Mt. St. Helens 10 years after the volcanic eruption that devastated more 500 square kilometres of forest land in just minutes.
Seasons62
Episode Summary
"Legacy of a Volcano" is episode 16 of Horizon season 27. It aired on May 14, 1990.