sandstone concretion with lichens

An oddity—there usually isn’t this kind of colour differentiation between concretions and the surrounding sandstone. The orangish lichens give it a very idiosyncratic look.


2 thoughts on “Two-toned

  1. Have you ever seen the commercial on T.V. were the three cave men find a bottle
    of soda one tries to open the bottle on a rock in the water. an eye opens and it turns
    out to be a dinosaur. It’s a “got milk” commercial. If you’ve not seen it then this won’t make any sense but if you have then you all know what this rock looks like. The commercial is hilarious.

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