WoGE #124 I found Ron's WoGE #123 in South Africa, so I'm pleased to serve the WoGE community with the next challenge, again from the geo-art category. If the scale bar would be in centimeters, one quickly could answer: it's a nice piece of malachite. But the scale is in kilometers, so I wonder who will be the first to identify this handsome feature, and provide some useful geological description. This is another Schott's rule-free run, folks, so you better stay tuned. - pluffi