There is a remnant of an old volcano about 1 mile downstream from the Ice Harbor Dam. The article in the Tricity Herald by one of Battelle's geologists reported that the remnant is about 150 feet high and 640 wide. I tried to access the article and couldn't. What I remember is that it is a sort of splatter cone. The material that was ejected has been worn down to where the central section is now a spire. You are also looking at basically the back half. We have remnants of dikes around the Walllula Gap area that added to the flood basalt present in the Columbia Basin but this is the only cone shaped remnant.
Link to Mt. Rainier Images |
Link to Mt. Batchelor Images |
The only two photographs that I got with the Bronica S2a camera.
Link to Mt. Shasta Images |
A photograph of General Grant taken with a Bronica S2a and a 40mm lens. |
Mammoth Mountain area of California has the Devil's Post Pile (DPP) but the Columbia River Basin and the Cascade's have areas where hundred's of feet of columnar lava is visible. Much of the lava flowed like water out of dikes in Oregon's Grande Ronde area. The DPP is kind of puny in comparison. The bunching together like a funnel makes the DPP unique. It is also more photogenic. I didn't have any place where I could photograph Columbia flood plain columnar lava looking away from the sun. For a comparison, the trees on the top are probably the same size. The Devils Post Pile is about the size of the gouge on the left.
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I visited Mt. St. Helens a couple of weeks ago and have some of those photographs developed and printed. I also have a section on Lake Wallowa and the Nez Perce..
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