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Mount Mayon, the Philippines' active volcano, exploded thunderously Monday, sending a huge gray column of lava fragments, ash, and steam 10 kilometers into the sky and prompting authorities to warn that a violent eruption may be imminent.
The pink and gray columns represent trees and branches reaching to the sky.
Early last century - long before Eugene residents dreamed of clinging to those rocks with fingers and toes for recreation - some entrepreneur figured out how to cleave the hard gray columns of stone into brick shapes that could be used for construction.