The Hellroaring (Backpacking) Professional Review and Guide
"A trip starting inside Yellowstone National Park, hiking through the open terrain of northern Yellowstone and into the lush upper Hellroaring Country in the Absaroka-Beartooth Wilderness in Gallatin National Forest. This is not the most spectacular hike in this book, but it offers some special features not found on most other backpacking vacations. The hike penetrates the uncrowded remoteness of the southern Absaroka Mountains.
Such privacy is rare in today’s popular hiking areas—even though about half of the trip lies within famous Yellowstone National Park. Also, expect to see large wildlife. Elk, moose, bison, and bears, including the mighty grizzly, are abundant in the area. This trip makes a nice loop thanks to two trails (Hellroaring and Coyote Creeks) that head north out of the park, looping around a grassy butte called Bull Mountain, which is easily viewed from the Coyote Creek Trail."