Steep mountains make for many tall, tumbling waterfalls as creeks spill down from the high country. The 5.4-mile round-trip hike to Ouzel Falls actually passes several cascades, including 200-foot-high Calypso. The quest starts from Wild Basin trailhead, on the southeast side of the park. On the west side, there’s Adams Falls, which pours down through a narrow, 50-foot-high gorge. Begin that one-mile round-trip hike at the East Inlet Trailhead near Grand Lake. nps.gov/romo or 970/586-1206.