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A close-up of the Unmanned Aircraft System (UAS) used by USGS scientists to meas

By National Innovation Center
image related to volcanoes. See description
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Detailed Description

A close-up of the Unmanned Aircraft System (UAS) used by USGS scientists to measure volcanic gases in remote areas of Kīlauea. The fissure 21 cone is visible in the far right background.

Sources/Usage

Public Domain.