Geologists! What's going on with this rock? A white patina (thin and plasticky) on top of aerated volcanic stuff (found in the Nesmith area). Looks like some sort of volcanic fusion and heating going on, as if it were trying to make a geode.
The purpose of this forum is to help people identify things they've seen while out hiking: wildflowers, trees, birds, insects, small animals, animal tracks, even geographical features like buttes or streams
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