然而这个区域还是基本上光秃秃的，布满了房子般大小的岩石块，形成一个个的小山岗，这些都是火山喷发的时候从山顶滚落下来的。

But the zone is largely treeless, studded with house-size rocky chunks, called hummocks, that broke off the top of the mountain when it exploded.

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这座高达2582米（9357英尺）的成层火山（百科看 这里——译注）顶部被一层30平方公里的冰川（10平方英里）所覆盖，大部分冰雪都积聚在山顶南部和东部因岩浆喷发所形成的盆地中。

The 2,582-meter (9,357-foot) stratovolcano is mantled by a 30-square-kilometer (10-square-mile) glacier field, most of it amassed south and east of the summit in a basin made by a caldera depression.

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自火山喷发以来，纳布诺火山的山顶一直被大量的水蒸气，气体及火山灰所遮盖。

Since the beginning of the recent eruption, a dense plume of water vapor, gas, and ash has concealed the summit of the Nabro volcano.

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