http://gallery.usgs.gov/images/logos/usgs_only.jpg USGS Multimedia Gallery Video Collection for: Natural and Man-Made Structures http://gallery.usgs.gov/ en-us OC_Web@usgs.gov (Office of Communications Web Group) http://gallery.usgs.gov/images/USGS.gif USGS http://gallery.usgs.gov/ <![CDATA[USGS Grand Canyon B-roll]]> http://gallery.usgs.gov/videos/29 <![CDATA[Glen Canyon Time-Lapse (River Mile 3)]]> http://gallery.usgs.gov/videos/24 <![CDATA[Glen Canyon Time-Lapse (River Mile 45)]]> http://gallery.usgs.gov/videos/25 <![CDATA[Opening a Dam to Study and Improve Resources in the Grand Canyon]]> http://gallery.usgs.gov/videos/22 <![CDATA[Marmot Dam Removal, Sandy River, Oregon: Time-Lapse]]> http://gallery.usgs.gov/videos/21