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USGS scientist Alex Iezzi digging a 5 foot deep hole to install volcano monitoring equipment at Mount Rainier in Washington.

By Cascades Volcano Observatory
USGS scientist Alex Iezzi digging a 5 foot deep hole to install volcano monitoring equipment at Mount Rainier in Washington.
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USGS scientist Alex Iezzi digging a 5 foot deep hole to install volcano monitoring equipment at Mount Rainier in Washington.

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