Geologists discovered a new blue water spring at Yellowstone National Park that likely formed after a series of "mildly explosive events," the United States Geological Survey said. The hole is about ...

Missouri’s Ozark National Scenic Riverways was the first national park area in the U.S. specifically created to protect a river system, so it's no surprise that its waterways—The Current and Jacks ...

Grand Prismatic Spring is a highlight of any visit to Yellowstone National Park! The largest hot spring in the park, the deep blue pool, is surrounded by yellow and orange algae. This is a spot you ...