"Rock Creek, a tributary of the Clark Fork River, flows out of the Welcome Creek Wilderness in the Sapphire Mountain Range. The creek flows 52 miles northwest through beautiful Rock Creek Valley amid rocky bluffs, green pastures, and mountain ranges rising up along both sides of the valley. Rock Creek offers blue ribbon trout fishing with healthy populations of browns, cutthroat, rainbow, and bull trout. The scenic valley also offers horseback riding, wildlife viewing, bird watching, and hiking. Valley of the Moon Nature Trail (formerly called Rock Creek Nature Trail) is a short interpretive trail with ten information stations. The panels describe the lush creekside habitat and wildlife. The hike weaves through the lush riparian area among cottonwoods, alders, willows, and hawthorns."