The Syncline Loop is an unmaintained, difficult trail that gives hikers a unique perspective of and challenging hike around Upheaval Dome.
Be advised, the NPS signs and maps that warn of a very difficult hike ahead are not hyperbole, as I thought at first. This hike is a loop around the famous Upheaval Dome on an unmaintained trail that leads you down over 1500 feet into the canyon, close to the Green River, then climbs back up 1500 feet and out.
We did it in Summer, not knowing anything about it, and I would recommend going in a different time of year, or at least bringing a gallon of water per person.
The trail conditions range from easily identifiable single track and well-built (though steep) stone staircases to completely unmaintained routes through desert washes and canyons marked only by cairns, and even sections that require some scrambling/ bouldering. This trail is not for the casual hiker.
When at the trailhead for Upheaval Dome overlook, you have the option to go left or right on the Syncline. I recommend going left, as the descent here is very steep, and the ascent at the end is a bit more gradual. However, both ways are challenging. Give yourself at least 4-5 hours to complete.
A good map and navigation skills are very important!
The views are amazing, and the adventure is worth it though, if you are properly prepared and in good shape!
If you're planning to stay overnight in the Synchline Campground, make sure to get a backcountry permit. Check here for more info: https://www.nps.gov/cany/plany...