On Sunday, May 18, 1980, at 8:32 a.m., the bulging north flank of Mount St. Helens slid away in a massive landslide — the largest in recorded history. Seconds later, the uncorked volcano exploded and blasted rocks northward across forest ridges and valleys, destroying everything in its path within minutes.

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A biologist spreads the wing of a wild hawk that had just been banded Sunday at Bonney Butte HawkWatch on the flanks of Mount Hood.