它也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形成的。
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。
Although it resembles an impact crater, it formed when a volcanic dome hardened and gradually eroded, exposing the onion-like layers of rock.
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