According to the National Park Service, describing the Sheep Rock Unit at John Day Fossil Beds National Monument:

The predominant exposures of green rock seen on Sheep Rock are a multitude of reworked layers of volcanic ash. The rich green color of the claystone was caused by chemical weathering of a mineral called celadonite. This happened millions of years ago as water moved through the alkaline ash beds under high pressure.

(click on any image for a slideshow… or see previous post for a more general view of the location.)

Wilderness is not a luxury but a necessity of the human spirit, and as vital to our lives as water and good bread. A civilization which destroys what little remains of the wild, the spare, the original, is cutting itself off from its origins and betraying the principle of civilization itself. 
Edward Abbey, Desert Solitaire


24 thoughts on “closer

    • You were here with me (virtually speaking, of course!) I split this hike up into 4 posts (3 previous and you might enjoy the newer one after this where I went a bit crazy?). I was utterly enthralled with this section of the painted hills. I’m so glad you got to visit it. You’re reminding me that I really, really want to go back and explore some more.


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