A slot-like chasm with waterfalls
About the Hike: Next door to busy Multnomah Falls but usually overlooked by tourists, this delightful trail explores a cavern behind Ponytail Falls and then loops around Oneonta Gorge, a mossy chasm so narrow that Oneonta Creek fills it wall to wall. An optional 1.8-mile side trip leads to Triple Falls, where three plumes of water plunge 120 feet at once.