| Image Title: Grand Prismatic Spring, Yellowstone N.P., WY Photographer's Notes: Located in Midway Geyser Basin along the Firehole River, north of Old Faithful; Grand Prismatic Spring is the largest in Yellowstone! With a diameter of 370 feet, this is the third largest hot spring in the world! Temperatures range from 145.5 F to 188.6 F. Photosynthetic bacteria form extensive colored mats ranging in colors. The darker colors can be a clue to cooler waters (relatively speaking!). This image is currently available in multiple sizes. To place an order: Please fill out and submit your contact information and questions about image. Please specify the image title you are inquiring about. |