Use sunset as your turnaround alarm.
Almost every hoodoo amphitheater in Utah is something you look down into from a warm parking lot. This one you walk the edge of at 10,500 feet, which changes the arithmetic completely: the Park Service calls it moderately strenuous and specifically warns off anyone with heart or lung trouble. Afternoon lightning is a real hazard at this elevation, so go in the morning. The access road is closed by snow from roughly mid-November to mid-May, which is why the season is so short.
Rim trail past 1,600-year-old bristlecone pines above a hoodoo amphitheater at 10,000 ft.
Heat note: desert country - in summer start at dawn and carry more water than feels reasonable.
2 liters water, trail shoes, sun layer, snacks, small first-aid kit.
Make it a weekend: Point Supreme Campground (Cedar Breaks) (Camping, 0 mi) · Navajo Lake (Fishing, 7 mi) · Navajo Lake Campground (Camping, 7 mi) · Duck Creek Campground (Camping, 10 mi)
More hikes nearby: Kanarra Falls (Hike, 19 mi) · Observation Point (East Mesa) (Hike, 23 mi) · Riverside Walk (Hike, 23 mi) · The Narrows (Bottom-Up) (Hike, 23 mi)