LaDuke Hot Spring in Gardiner, Montana (image) Penn State Caption This image shows LaDuke hot spring in Gardiner, Montana, along the Yellowstone River, near Yellowstone National Park. The images show the rich mat community of chlorophototrophic bacteria that grow along the hot spring's effluent channel. The dark-green-colored organisms are mainly cyanobacteria. Credit Yellowstone National Park Photo Collection Usage Restrictions The image credit must be published along with the image. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.