Terpano
Original illustration

A Forest Rebuilding after a Lateral Blast

Mount St. Helens Blast Zone, United States

A Forest Rebuilding after a Lateral Blast — original illustration of Mount St. Helens Blast Zone, United States

A Forest Rebuilding after a Lateral Blast is an original illustration set in Mount St. Helens Blast Zone, United States. It lies in mid-latitudes, where the climate is oceanic — mild, wet through the year.

A broad gray pumice plain lies below a volcano whose northern flank is cut away into an open crater. Long dead conifer trunks point in the same direction across the blast zone, while scattered islands of young firs and low green plants reclaim the ash-covered ground.

Why are thousands of dead trunks aligned across a gray plain below a volcano missing one side?

A landslide uncorked the volcano and released a powerful lateral blast that swept outward rather than only upward. Hot gas and debris flattened forests in aligned rows, stripped the inner zone, and spread pumice and ash across the plain. Surviving roots, buried organisms, windblown seeds, and time then created patchy recovery, so the breached cone, parallel tree fall, barren deposits, and young regeneration record both eruption and ecological succession.

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