Meinstein said the harbor is the caldera of a volcano.
迈尔·斯泰恩说，港口是火山的一个喷口。
The caldera is considered an active volcano.
该破火山口被认为是活火山。
A small circular caldera crowns the volcano. A little more than a kilometer across, the caldera is defined by walls that range from 80 to 300 meters high.
山顶有小圆形火山口，直径大约1千米，周围是80到300米高的墙（喷发岩形成的）。
Travellers flock to the Indonesian island of Java to see the magnificent Kawah Ijen volcano - but what they don't expect to find is the stunning turquoise-hued caldera lake at the volcano's summit.
游客蜂拥着去印尼爪哇岛是为了亲眼目睹壮观的卡瓦伊真火山——但他们从未想过能够在火山顶上看到这蓝绿交加的火山口湖。
It sits on top of an ancient super volcano, known as The Yellowstone Caldera.
它坐落在一座古老的超级火山之上，该火山被称之为黄石火山口。
Modern geology studies have shown that Hill is a world with a sense of typical Cretaceous rhyolitic ancient volcano - caldera.
现代地质学研究表明，雁荡山是一座具有世界意义的典型的白垩纪流纹质古火山——破火山。
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.
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。
The caldera is 48 by 72 kilometers. And it remains an active volcano.
该火山口大小为48×72公里，它仍然处于活跃期。
The caldera is 48 by 72 kilometers. And it remains an active volcano.
该火山口大小为48×72公里，它仍然处于活跃期。
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