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Why did the Forest Service lift the climbing closure at Mount St. Helens and reopen climbing on July 21, 2006?

April 26, 2017climbing closure forest Helens lift mount st reopen service

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Why did the Forest Service lift the climbing closure at Mount St. Helens and reopen climbing on July 21, 2006?

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By the spring of 2006, after nearly two years of continuous eruptive activity, Mount St. Helens had settled into a pattern of slowly extruding lava with extremely low gas content. Dissolved gas in lava is what drives most volcanic explosions.