National Geographic : 1951 Jun
Old Volcanoes Look onWooded Vistas inthe Cascades Green ranges oftheCas cades runfrom Canada to California. Heavy snows and rains stimulate the growth oftimber onthe western slopes (page 723). Mount St.Helens (9,671 feet, left) and Mount Adams (12,307), athree day hike apart, stand in southern Washington, over looking theGifford Pinchot National Forest wilderness. These two peaks, like Hood, Rainier, and some others intheCascades, are extinct orinactive volca noes. Explorer John C. Fremont acentury ago watched St.Helens's last eruption-a violent one and collected ejected sam ples. Earlier eruptions dammed astream and formed Spirit Lake (not shown) atthevolcano's base. This lake issodeep that itsbottom inplaces hasnever been plumbed. Loose rocks make the north side ofSt.Helens difficult and dangerous to climb during summer. Forest lookouts, onthe alert forfire, man Elk Mountain Lookout Station (foreground). This airview looks to ward theeast. Fairchild Aerial Surveys, Inc.