USGS Multimedia Gallery
Title: Luna Leopold and Ralph Bagnold
In the midst of a research expedition in Cataract Canyon, Utah, former USGS Chief Hydrologist Luna Leopold and eminent physicist Ralph Bagnold take a moment to rest.
Location: Cataract Canyon, Utah, USA
Date Taken: 1966
Photographer: William Emmett , USGS (retired)
Usage: This image is public domain/of free use unless otherwise stated. Please refer to the USGS Copyright section for how to credit the photo.
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