How Does Nature Carve Sandstone Pillars and Arches?
smithsonianmag.com
Some of the most stunning structural feats aren’t built by architects or sculpted by artists. From Bryce Canyon to the Elbe Sandstone Mountains of central Europe, sandstone arches, alcoves, and pillars around the globe look strikingly similar to the same features in manmade architecture. So, how does nature do it?