The Mount Hood National Forest is one of the most-visited National Forests in the United States, with over four million visitors annually. Less than five percent of the visitors camp in the forest. The forest contains 170 developed recreation sites. Common recreational activities in the Mount Hood National Forest include fishing, boating, hiking, hunting, rafting, horseback riding, skiing, mountain biking, berry-picking, and mushroom collecting. A portion of the Pacific Crest Trail passes through the National Forest on the flanks of the mountain. Mount Hood is a popular destination for mountain climbers, making it the second most climbed mountain in the world.