This is actually a collection of three trails to make it the loop as described here: Conventional clockwise loop: North Rim from the Visitors’ Center connects with Mossback Ridge, which connects with Greenfield, back to VC. But we did it backwards, clockwise, to get most of the climb in early while we were fresher. Enjoyed it. Trail varies from wide & easy to narrow and rocky. Got off trail once on Mossback section. Places could’ve marked better, especially Dill Point (rock outcropping) (but that may be skewed because we hiked the loop backwards). Map recommended. On North Rim section, if in doubt take fork toward the mountain, not toward valley, except to seek view from overlook.