59 min
Overview
Between 1760 and 1810, Mount Hood unleashed the Old Maid eruptions, whose massive pyroclastic flows issuing from Crater Rock coursed down the valleys of the Sandy, Zigzag, and White rivers, burying forests and jamming up the waterways themselves. Geologists believe the flows down the White River happened early in this period, but we are still seeing the results today, as the unstable deposits in the upper valley threaten Highway 35 during big rainstorms. A short hike takes you from Timberline Lodge to a lateral moraine which offers views to the exposed remnants of a mountain hemlock forest in a steep, exposed valley that looked quite different before 1760.
Trail Stats
2.9 km
98 m
1839 m
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Photos
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