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How was The Crater Glacier formed?

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Anonymous

9y ago
Updated: 8/21/2019

Crater Glacier formed in the crater left by the 1980 eruption of Mount St Helens. The glacier formed between the crater's south wall and the cooled lava dome in the middle. The high walls of the crater keep the southern part of the crater in almost perpetual shade. Without sunlight, this location remains cool and so the snow that falls there never completely melts. Over the course of a few years this snow has piled up to form a glacier.

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Wiki User

9y ago

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