This is a 13 mile hike in the Old Faithful area. I started at the Old Faithful parking lot, and did a clockwise loop around to Mallard Lake and back down to Old Faithful. After the thermal section, most of the hike is through thick forest. I was happy to see fresh bear tracks on the trail. This hike has a very good trail all the way and was an easy hike.

Old Faithful is a cone geyser in Yellowstone National Park in Wyoming, United States. It was named in 1870 during the Washburn–Langford–Doane Expedition and was the first geyser in the park to be named. It is a highly predictable geothermal feature and has erupted every 44 minutes to two hours since 2000.