McKenzie River Drive travels along the north bank of the river through the community of Rainbow. Historic Holiday Farm, once a stage stop for travelers, is located here. It is also the home of the Belknap Covered Bridge, originally built in 1890 and rebuilt four times since then. It was completely reconstructed after it was washed out in the 1964 flood. Some of the Belknap family settled in this area, long after Rollin Belknap bought Belknap Springs around 1871. King Castle Trail can be accessed from King Road (across the covered bridge). It’s a steep 2-mile climb with many switch-backs, but well worth the effort. It leads to the top of Castle Rock (a former fire lookout) and a fantastic overview of the valley. The community of Rainbow is comprised of a resort, two restaurants and a deli, 2 RV parks, a motel, country store/gas/gift shop (last chance to buy gasoline for 60 miles), a community center, a conference center/basketball academy and a 18-hole golf course with a fantastic view of the Three Sisters Mountains from the greens.