Oregon Field Guide S24 E04 Mt. Hood's Volcanic Past, Warren Falls, Yellow Tuft Alyssum

Mt. Hood's Volcanic Past Mt. Hood is an active volcano with a history of relatively recent eruptions. Warren Falls A man-made waterfall in the Columbia Gorge blocks a natural fall. One man wants to end that. Yellow Tuft Alyssum A new invasive species from Europe has been introduced in the Illinois River valley.