According to Kemmerling this separating wall was as high as the surrounding crater rim 70 years before his survey, but it had subsequently eroded down by the time of his visit (Kemmerling, 1929).
根据Kemmerling说，在他展开勘查的七十年前，这个隔离岩石壁与围绕火山边缘的岩石一样高，但是在他1929年来此前，岩石壁已经相继被侵蚀了。
Although it resembles an impact crater, it formed when a volcanic dome hardened and gradually eroded, exposing the onion-like layers of rock.
尽管它看起来像是一个陨石撞击坑，它是在一个火山穹丘硬化和逐步侵蚀中，剥离出洋葱状岩石层的结果。
The softer material around them has been eroded and blown out of the crater by north-easterly winds and now forms dark streaks on the surroundings.
他们周围的软物质已被侵蚀和吹制出的东北风火山口，现在的形式对周围环境的暗条纹。
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