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File name: cave-thermometer.jpg

Original Resolution (pixels): 1984 × 1487

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Date Published: May 31, 2023

Alternate Text: Two scientists wearing hard hats and hip waders sit in a cave

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Two scientists wearing hard hats and hip waders sit in a cave

Image caption

David Angel and Babs are looking at a thermometer after taking air temperature and water temperature measurements in a California cave. Photo by Greg Roemer. David and Greg are part of the Cave Research Foundation.