夜里，埃塞俄比亚裂谷达纳基尔洼地，主火山喷口内活熔岩湖突破尔塔·阿雷火山部分破裂的硬壳闪闪发光。
Active lava lake inside the main caldera at night, glowing breaks through the thin and partially broken crust at Erta Ale volcano in the Danakil depression, Rift Valley, Ethiopia.
科学家确定凹陷处是一个火山口，并且在它附近明亮的圆环是火山碎屑岩，是火山喷发出岩浆的残余，很象地球上的火山喷口。
The scientists determined that the depression was a volcanic vent, and the bright ring around it was pyroclastic, remnants of lava that had been spewed outward, much like a volcanic fountain on Earth.
这座单体火山拥有几乎是世界上最大的完整火山喷口，这个直径约为6.5公里（4英里）的锅型火山口，是当熔岩从火山内腔流过时，上部的岩浆岩坍塌而形成的。
The caldera is about 6.5 kilometers [4 miles] across. It formed following an eruption, when the emptied magma chamber collapsed under the weight of volcanic rock above it.
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