It all begins with getting out there Skip to Videos Florida & Beaches | Wyoming | Louisiana | Wyoming, • 11/16/21 Kepler Cascades Waterfalls in Yellowstone National Park The Kepler Cascades are a series of waterfalls along the Firehole River, located South of Old Faithful off of Hwy 191/Grand Loop Road. The tallest waterfall is 30 feet, with the total drop spanning more than 150 feet.