Bisti/De-Na-Zin Wilderness
From the BLM site: The Bisti/De-Na-Zin Wilderness is a rolling landscape of badlands which offers some of the most unusual scenery found in the Four Corners Region. Time and natural elements have etched a fantasy world of strange rock formations made of interbedded sandstone, shale, mudstone, coal, and silt. The weathering of the sandstone forms hoodoos – weathered rock in the form of pinnacles, spires, cap rocks, and other unusual forms. Fossils occur in this sedimentary landform.
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The person in the photos is my brother, Larry. We found the clay like mud to be quite slippery after a rain. The erosion is peculiar with this type of soil. Sometimes, rather than eroding normally, rain water plunges through a hole and runs through a tunnel. The sediment then collapses making a groove. Not all of it collapses so the appearance is much like snow bridges on a glacial crevasse.