A view of Unalaska City in the Aleutian Islands. The Aleutian Islands are part of the northern edge of the subduction zones around the Pacific Ocean. Credit: Tom Doyle, US Department of Transportation

A view of Unalaska City in the Aleutian Islands. The Aleutian Islands are part of the northern edge of the subduction zones around the Pacific Ocean. Credit: Tom Doyle, US Department of Transportation

A view of Unalaska City in the Aleutian Islands. The Aleutian Islands are part of the northern edge of the subduction zones around the Pacific Ocean. Credit: Tom Doyle, US Department of Transportation

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