Sunday, July 21, 2024: …Three Minutes After The Previous Photo, And Also Unmentioned By The ZMM Narrator
…Seen In The Upper Part Of This Photo =>
…..The Darker Old Horizontal Volcanic Lava Formations:
…….In Creating This Snake River Canyon, The River Has Cut Down Thru These Old Volcanic Lava Formations.
…This /\Above/\ Seen Formation, Is Especially Interesting, Because The Once Molten Lava, As It Cooled, Made (As You Can See) Vertical Columns, Which Are Called “Devil’s Post Piles”.
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These So-Called “Devil’s Post Piles”, Are Most Noteworthy, And May Be Seen At =>
…A) The Dry Stone Garden WebPage Has Explanation And 12 Good Photos. Click Here.
…B) The Devils Postpile National Monument, a U.S. National Monument located near Mammoth Mountain in Eastern California. To See Wikipedia Article, Map, And 4 Photos, Click Here.

“Devil’s Post Piles” Are Formed In Ancient Lava Formations: These Formations Occur In Idaho, Oregon, And Washington, And Are Called The Columbia River Basalts,
…A) For A Short Beginner’s Introduction, A Map, And 2 Good Photos, Click Here.
…B) The Columbia River Basalts, were deposited between 17.5 and 6 million years ago and cover an area of approximately 210,000 km2. Five main episodes of volcanism occurred in western Idaho, central and southern Washington, and northern Oregon. For A Longer & More Technical Discussion Of These Basalts, With A Time Diagram Showing Historical Millions Of Years Ago Times Of Occurrence, And 7 Maps Including Oregon, Part Of Idaho, And Southern Washington. Click Here.
…C) For A Brief Discussion About The Columbia River Flood Basalts, And 7 Good Photos, Click Here.

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