The current stratovolcano — a cone-shaped volcano built from successive layers of thick lava flows and eruption products like ash and rock fragments — is built on top of an older stratovolcano.

如今层状的尤耶亚科火山(由一层一层的火上熔岩和火山喷发产生的灰尘和碎石形成的火山锥)是在一座更加古老的层状火山上形成的。

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The current stratovolcano-a cone-shaped volcano built from successive layers of thick lava flows and eruption products like ash and rock fragments-is built on top of an older stratovolcano.

这个层状火山是由稠密的熔岩流以及火山灰和岩石碎片等喷发物所形成的连续层堆积而成的锥形火山，它位于一个更老的层状火山之上。

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But those who climb Inferno Cone may find themselves disappointed because they can't find the source of the eruption.

但是，这些谁爬地狱锥可能会发现自己的失望，因为他们无法找到的爆发源。

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And dead ahead is the gaping cone of Vesuvius, long tongues of lava from the last eruption (1944) visible even from here.

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It allows scientists to study the fissures in the cone of the volcano -- if the fissures are getting hotter, it means an eruption is imminent.

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