Cache is a 2" bison tube located at the Kelsey trailhead. The road is a narrow, graveled county road that is ok for low clearance cars. I did my best to get a good reading, but between the tree canopy and the canyon walls it may be a bit off.
My first hike into the Marble Mountain Wilderness was up this trail, but I didn't made it to Paradise Lake until I tried a much shorter route a couple of years later from a different trailhead. There is an interesting sign at the trailhead about the trail's history. I'm always amazed at what people were willing and able to do before the advent of modern machines.