MOUNT ST. HELENS NATIONAL VOLCANIC MONUMENT — Amid children’s excited chatter and giggles, the first signs of a volcanic eruption — harmonic tremors — spread at the base of Mount St. Helens.
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Source: The Columbian
MOUNT ST. HELENS NATIONAL VOLCANIC MONUMENT — Amid children’s excited chatter and giggles, the first signs of a volcanic eruption — harmonic tremors — spread at the base of Mount St. Helens.
Read more…
Source: The Columbian