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Lewis & Clark's Columbia River - "200 Years Later"
"Boring Lava Field, Washington and Oregon"
Includes ... Boring ... Boring Lava Field ... Biddle Butte ... Bobs Mountain ... Broughton Bluff ... Chamberlain Hill ... Devils Rest ... Larch Mountain ... Mount Zion ... Prune Hill ... Rocky Butte ...
Image, 2003, Rocky Butte, Oregon, from Columbia River, click to enlarge
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Rocky Butte, Oregon, as seen from Ryan Point, Washington. Image taken June 15, 2003.


Boring Lava Field ...
The Boring Lava Field surrounds Portland, Oregon, and contains over 50 vents. The field is 1 to 2 million years old. As Lewis and Clark paddled down the Columbia River, west of the Columbia River Gorge, they passed many cones of the Boring Lava Field, from shield volcanoes such as Larch Mountain, to smaller cones like Rocky Butte. Other vents include Bobs Mountain which rises above Cape Horn and Chamberlain Hill, on the right bank of the Sandy River.

Boring ...
The Boring Lava Field gets its name from the town of Boring, Oregon, which in turn was named for W.H. Boring, an old resident of the area. The district was known to old setters as the Boring neighborhood, and in 1903 a townsite was platted and called Boring Junction. The Boring Post Office was established in March 1903. Builders of the interurban railway adopted "Boring" as the name of the community.

Image, 2006, Boring Lava Cones east of Portland, Oregon, click to enlarge
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Boring Lava Cones east of Portland, Oregon. View from the Interstate 205 Bridge crossing the Columbia River. Image taken August 30, 2006.


Boring Lava Cones ...


Biddle Butte (Mount Zion), Washington ...
Biddle Butte (also known as "Mount Zion") is a small olivine shield volcano that postdates the Troutdale Formation. A small basaltic-andesite intracanyon flow can be seen emanating from Biddle Butte. Similar vents in the Portland, Oregon, area are inferred to be less than 730,000 years old. Good views of Biddle Butte are from Rooster Rock State Park and Bridal Veil Falls area, on the Oregon side of the Columbia River.
[More]

Image, 2003, Mount Zion, Washington, from Rooster Rock, Oregon, click to enlarge
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Biddle Butte (Mount Zion), Washington, from Rooster Rock, Oregon. Columbia River and mudflats below Rooster Rock are in the foreground. Image taken October 18, 2003.
Image, 2004, Mount Zion, Washington, from Bridal Veil, Oregon, click to enlarge
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Cape Horn, Washington, with Biddle Butte (Mount Zion) above, from Bridal Veil, Oregon. Image taken October 11, 2004.


Bobs Mountain, Washington ...
Bobs Mountain is a partial summit crater located on the Washington side of the Columbia River, 20 miles northwest of Portland, Oregon. It can nicely be seen from the pullout at Cape Horn, along Washington State Highway 14, east of Washougal, Washington.

Who was Bob ??? The 1911 USGS Mount Hood and Vicinity, 1:125,000 topographic map has "Bobs Mtn". Mark Parsons in Across Rushing Waters, A History of Washougal River and Cape Horn (1982, Post-Record, Camas) calls the feature "Ross' Mountain" after Alexander Ross.


Image, 2003, Bobs Mountain, Washington, as seen from Cape Horn, click to enlarge
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Bobs Mountain, Washington, as seen from Cape Horn, Washington. Image taken July 5, 2003.
Image, 2004, Bobs Mountain, Washington, as seen from Cape Horn, click to enlarge
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Bobs Mountain, Washington, as seen from Cape Horn, Washington. Image taken October 27, 2004.


Chamberlain Hill, Oregon ...
The 890-feet-high Chamberlain Hill is one of the cones of the Boring Lava Field and is located in Multnomah County, Oregon, just east of the Sandy River. Chamberlain Hill was named for Elijah D. and Sarah Ellen Chamberlain, who came to Oregon from Kansas in 1881 and settled in the Springdale area, south of the hill. The northwest corner of Chamberlain Hill which borders the Sandy is called "Broughton Bluff". It can be reached from the Lewis and Clark State Recreation Area on the east side of the Sandy River.
[More]

Image, 2003, Chamberlain Hill, Oregon, as seen from Washougal, Washington, click to enlarge
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Chamberlain Hill, Oregon, as seen from Washougal, Washington. The Sandy River delta is to the right. Image taken July 3, 2003.
Image, 2005, Broughton Bluff from Lewis and Clark State Park, click to enlarge
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Broughton Bluff and Clark State Recreation Area, Oregon. Broughton Bluff is the northwest corner of Chamberlain Hill, one of the Boring Lava Cones. Image taken October 22, 2005.


Devils Rest, Oregon ...
Devils Rest is a Boring Lava Cone which sits above Angels Rest, a lava flow of Columbia River Basalt.

Image, 2004, Angels Rest and Devils Rest, Oregon, from Tunnel Point, click to enlarge
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Angels Rest (ridge left) and Devils Rest (cone on top), as seen from Tunnel Point, Oregon. Angels Rest is Columbia River basalt and lies uphill from Dalton Point, Oregon. Devils Rest is a Boring Lava cone. Image taken October 10, 2004.


Larch Mountain, Oregon ...
Larch Mountain, Oregon, is a 4,056-feet-high shield volcano of the Boring Lava Field. A good view of Larch Mountain is from the Tunnel Point Pullout on the west-bound lane of Interstate 84, just east of Portland, Oregon.
[More]

Image, 2003, Larch Mountain, Oregon, as seen from Washougal, Washington, click to enlarge
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Larch Mountain shield volcano, Oregon, as seen from Washougal, Washington. Image taken July 3, 2003.
Image, 2003, Larch Mountain, Oregon, with Crown Point, click to enlarge
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Larch Mountain shield volcano, Oregon (background), with Crown Point (foreground). View from Tunnel Point, Interstate 80, Oregon. Image taken June 15, 2003.


Mount Tabor, Kelly Butte, and Rocky Butte, Oregon ...
Willamette National Cemetery (see below) is located at the top of a Boring Lava Cone. Good views of other Boring Cones -- Mount Tabor, Kelly Butte, and Rocky Butte -- can be had.

Image, 2005, Boring Lava Field from Willamette National Cemetery, Oregon, click to enlarge
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Boring Lava Field -- Mount Tabor, Kelly Butte, and Rocky Butte. View from the Willamette National Cemetery, another Boring Lava Cone. Image taken December 8, 2005.
Image, 2005, Boring Lava Field from Willamette National Cemetery, Oregon, click to enlarge
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Boring Lava Field -- Kelly Butte, and Rocky Butte. View from the Willamette National Cemetery, another Boring Lava Cone. Image taken December 8, 2005.
Image, 2005, Boring Lava Field from Willamette National Cemetery, Oregon, click to enlarge
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Boring Lava Field -- Mount Tabor. View from the Willamette National Cemetery, another Boring Lava Cone. Image taken December 8, 2005.


Prune Hill, Washington ...
The base of the Boring Lava cone "Prune Hill" can be seen rising behind Lady Island and Camas, Washington. The first name given to this area was "Rock Quarry District" for the large quarry located on the Columbia River near Fisher. The name "Prune Hill" was adopted in 1900. In the 1880s and 1890s the west slopes and top of the hill were planted prune trees, with a Mr. Boyer being the first man in the area to put in a big prune orchard. Other settlers followed. At one time there were seven dryers in the Prune Hill area alone (none remain today). By the turn of the century Clark County, Washington, was known as the prune capitol of the world, a title which continued until the Depression when the bottom fell out of the prune market. Today only a few prune trees remain. Good views of Prune Hill can be had from another Boring Lava Cone, Rocky Butte, located south of the Portland International Airport.
[More]

Image, 2005, Prune Hill, a Boring Lava Cone, as seen from Rocky Butte, click to enlarge
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Prune Hill, Washington, a Boring Lava Cone, as seen from Rocky Butte, Oregon Image taken June 15, 2005.
Image, 2004, Prune Hill, Washington, from Chinook Landing, Oregon, click to enlarge
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Prune Hill, Washington, from Chinook Landing, Oregon. Lady Island is the low trees in the middleground. Image taken October 11, 2004.


Rocky Butte, Oregon ...
Rocky Butte is a volcanic cone of the Boring Lava Field. Once known as "Wiberg Butte", today it is called "Rocky Butte" after the quarry on the east side. The slightly-over-600-feet-high butte is about 1.3 million years old, with two vents at the top.
[More]

Image, 2003, Rocky Butte, Oregon, from Columbia River, click to enlarge
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Rocky Butte, Oregon, as seen from Ryan Point, Washington. Image taken June 15, 2003.


Willamette National Cemetery, Oregon ...
Willamette National Cemetery is located at the top of a Boring Lava Cone. Good views of other Boring Cones -- Mount Tabor, Kelly Butte, and Rocky Butte -- can be had (see above). Willamette National Cemetery also offers views of Portland, and the Cascade Range volcanoes such as Mount St. Helens and Mount Hood

Image, 2005, Boring Lava Field from Willamette National Cemetery, Oregon, click to enlarge
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Boring Lava Field -- Willamette National Cemetery. Image taken December 8, 2005.
Image, 2005, Boring Lava Field from Willamette National Cemetery, Oregon, click to enlarge
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Boring Lava Field -- Willamette National Cemetery. Image taken December 8, 2005.
Image, 2005, Boring Lava Field from Willamette National Cemetery, Oregon, click to enlarge
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View of Portland, Oregon, from the Willamette National Cemetery. Image taken December 8, 2005.
Image, 2003, Willamette National Cemetery, Oregon, click to enlarge
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Willamette National Cemetery, Memorial Day, 2003. Image taken May 23, 2003.
Image, 2003, Willamette National Cemetery, Oregon, click to enlarge
Click image to enlarge
Willamette National Cemetery, Memorial Day, 2003. Image taken May 23, 2003.


From the Journals of Lewis and Clark ...

Clark, --
 




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*River Miles [RM] are approximate, in statute miles, and were determined from USGS topo maps, obtained from NOAA nautical charts, or obtained from the U.S. Army Corps of Engineers Website, 2003

Sources: Allen, 1975, Volcanoes of the Portland Area, Oregon: State of Oregon, Department of Geology and Mineral Industries, The ORE-BIN, v.37, no.9, September 1975; Beeson and Tolan, 1987, IN: GSA Centennial Field Guide, Vol.1; Center for Columbia River History Website, 2005; Hitchman, R., 1985, Place Names of Washington, Washington State Historical Society; McArthur, L.A., and McArthur, L.L., 2003, Oregon Geographic Names, Oregon Historical Society Press, Portland; Norman, D.K., and Roloff, J.M., 2004, A Self-Guided Tour of the Geology of the Columbia River Gorge -- Portland Airport to Skamania Lodge, Stevenson, Washington: Washington Division of Geology and Earth Resources, Open-File Report 2004-7, March 2004. Parsons, M.E., 1982, Across Rushing Waters, A History of Washougal River and Cape Horn, Post-Record, Camas; Swanson, et.al., 1989, IGC Field Trip T106: Cenozoic Volcanism in the Cascade Range and Columbia Plateau, Southern Washington and Northernmost Oregon: American Geophysical Union Field Trip Guidebook T106.

All Lewis and Clark quotations from Gary Moulton editions of the Lewis and Clark Journals, University of Nebraska Press, all attempts have been made to type the quotations exactly as in the Moulton editions, however typing errors introduced by this web author cannot be ruled out; location interpretation from variety of sources, including this website author.
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December 2006