当距离锥顶还有三米时，观察员通过无线电告诉他岩浆的活动水平，在哪里爆发，什么时候溢出。
When he was ten feet from the top, spotters described to him over the radio the level of the lava, where it was exploding, where it was spilling over.
变硬的火山岩一直延伸到离火山灰锥4英里（6公里）远的地方，厚达100英尺（30米）。
The hardened lava extends some 4 miles (6 kilometers) from the cinder cone, and is about 100 feet (30 meters) thick.
而其东西两侧的地方高达1000米(3000英尺)，有海拔很高的火山锥点缀在边缘。
The surrounding land rises to 1, 000 meters (3, 000 feet) east and west of the valley, and high-elevation, volcanic cinder cones dot the rim.
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