A "No motor vehicles" sign
was placed in a barrel but it didn't stop a couple in an ATV that whizzed up the road just as I was parking my truck. I later met them as they returned, nice folks but the kind that knew that the sign did not apply to them. The gravel road splits about 3/4 mile ahead and you need to be going left of the big mountain you see in this picture. Going left will put you in the correct canyon and on the correct route.