Jason Harrison, a seasonal park ranger with the U.S. Forest Service, talks to students from Mt. Tabor Middle School in Portland, Ore. at the Johnston Ridge Observatory at Mount St. Helens as he holds up photographs Tuesday, May 17, 2005, of the volcano that were taken before a massive explosive eruption altered its shape and killed 57 people on May 18, 1980. Wednesday will mark the 25th anniversary of the blast. The actual volcano is mostly obscured by clouds behind Harrison. (AP Photo/Ted S. Warren) Ran on: 05-18-2005  Jason Harrison, a U.S. Forest Service park ranger, left, holds up photographs as he talks to students about Mount St. Helens, right. Photo: TED S. WARREN
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