WEBVTT

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So you might be wondering why on Earth we might be 
interested in these boulders sitting on the deep

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seafloor. We're in an area that's just below 
a landslide scarp. We think that this landslide

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scarp may be related to a very large earthquake 
and associated tsunami that happened in 1946.

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It affected the nearby island of Uminak. We're 
trying to figure out whether this landslide

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scarp was fairly recent or if it's something 
that's quite old. By looking at the blocks at

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the bottom and looking to see how recent they look 
to see how much sediment has accumulated and how

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much biologic activity has established on that 
surface we can get a general idea of how fresh

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it might be so that we can better predict and 
understand the impacts of future geologic hazards.