Yellowstone geysers have captured the imagination of visitors for centuries. But Yellowstone National Park geologists and other researchers are using an array of high-tech tools and techniques for the first time to get a much more revealing look at the park's large-scale hydrothermal systems in action. By combining advanced tools like infrared photography, laser image mapping and GPS locators, researchers are putting together increasingly detailed and accurate pictures of the complex underground processes that shape surface features like geysers, mud pots, hot springs and fumaroles. Continue Reading →