Spencer Branch

Search turns up no documented hiking trail, trailhead, or visitor feature under the name "Spencer Branch" in the Alton area. The closest confirmed named feature in this part of Kane County is Spencer Bench, a benchland shown on the Long Valley Junction USGS quadrangle near Alton, at roughly 6,700 feet elevation — but nothing ties that bench to a maintained trail or established hiking route either, and the name match to this listing isn't certain.

Rather than describe a hiking experience that isn't documented anywhere, this is honest backcountry terrain: high desert bench country in the Dixie National Forest backcountry near Long Valley, with no posted trail, distance, or trailhead. Treat it as open forest land rather than a built destination.