USGS Multimedia Gallery
Title: Boulder Geomagnetic Observatory
Azimuth mark, Absolutes building and Coil building at Boulder magnetic observatory.
Location: Boulder, CO, USA
Date Taken: 3/09/2011
Photographer: Jeffrey Fox , USGS
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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