the Torniojoki, Tornio, Finland
near Dunkerque, France
near the Dolly Varden Mine, Blue River, Colorado, USA
Independence Pass, near Aspen, Colorado, USA
below the Climax molybdenum mine, Leadville, Colorado, USA
near Mexican Hat, Arizona, USA
near 29 Palms, California, USA
oil fields near Rangely, Colorado, USA
on Lake Michigan, USA
near Reykjavik, Iceland
