A geologic history of the Pacific Northwest that explains how islands near China accreted, or welded, themselves to the North American continent. Animations of the formation of North America explain the process. The video also visits Hells Canyon in Idaho. On-location interviews with an expert geologist add to the viewer's experience.
Right-click to save the video file: MP4 format (121 MB) | WebM format (102 MB) | MPEG-1 format (204 MB)