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MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
“Bite-Size Bits of Local, National, and Global History”
Near Packwood in Lewis County, Washington — The American West (Northwest)
 

The Palisades are Clues to the Past

 
 
The Palisades are Clues to the Past Marker image. Click for full size.
By Duane Hall, August 31, 2010
1. The Palisades are Clues to the Past Marker
Inscription. The rock before you is a clue to a geologic mystery. Between 110,000 and 20,000 years ago, a volcano erupted about nine miles away. Dacite lava flowed here and stopped, forming an unusually deep pool. Geologists donít know for sure what blocked the lava. It may have been a glacier or a cliff.

The edge of the lava flow cooled much faster than the rest of the flows. This made fractures in the columns.

(Map Caption)
Map showing the general path of the dacite lava flow from a volcano vent on the ridge above Coyote Lake.

(Right Drawing Caption)
Revealing a mystery
Long after the lava cooled, the Clear Fork of the Cowlitz River scoured away softer material, exposing the Palisades.
 
Location. 46° 41.03′ N, 121° 32.959′ W. Marker is near Packwood, Washington, in Lewis County. Marker can be reached from U.S. 12 0.1 miles east of Forest Service Road 1276, on the right when traveling east. Click for map. Marker is located at the Palisades Viewpoint scenic pullout. Marker is in this post office area: Packwood WA 98361, United States of America.
 
Other nearby markers. At least 5 other markers are within 12 miles of this marker, measured as the crow flies. Traveling Over the Cascades: Past and Present (within shouting
The Palisades image. Click for full size.
By Duane Hall, August 31, 2010
2. The Palisades
As viewed from the marker
distance of this marker); Packwood (approx. 7.9 miles away); The Story of Kloochman Rock (approx. 9.6 miles away); Inspired to Preserve (approx. 11.2 miles away); An Ancient Community (approx. 11.3 miles away).
 
Categories. Natural Features
 
 
Credits. This page originally submitted on , by Duane Hall of Abilene, Texas. This page has been viewed 314 times since then and 13 times this year. Photos:   1, 2. submitted on , by Duane Hall of Abilene, Texas. This page was last revised on June 16, 2016.
 
Editor’s want-list for this marker. Photo with better clarity (and without the Washington rain) of the marker. Photo of wide-view of marker and surroundings. • Can you help?
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