I have a feeling the OP is not going to deliver.
Deliver what? Reveal the location of the canyon? LOL. Sorry boys, I don't know the name of the canyon. But it's east of Bullhead City, AZ. It starts out as a big broad wash, then it starts narrowing as it gets closer to the Black Mountains. There is no name or marking for the turnoff in Bullhead City but it's off the Parkway about 1-1 1/2 mile north of the halfway point along the parkway. The day I filmed that video is the first time I had ever been there, and I had just turned off onto the wash on a whim.
I was out shooting photos of hawks and falcons and as I drove up this wash it turned into this beautiful canyon. Anyways, I had my digital SLR camera with me and not my video camera. My SLR doesn't have auto-focus in video mode so combined with holding it with one hand while driving and no auto-focus the video turned out fairly blurred in some places.
Also I need to correct myself. In my first post said I drove through the canyon after the video ended. Actually, I drove about 100 yds past where the video ended, then turned around when big boulders in the canyon blocked my path, but there was a small area just before the boulders that was big enough for me to turn around--with a lot of maneuvering--and go back out of the canyon. An ATV or UTV could have made it through with their narrower wheel bases, but not the 4R or at least not mine which isn't equipped for boulder crawling.
BTW, I did walk the canyon to the point where the video ends before I attempted to drive through it. Then I walked a ways past the point where the video ends to see how far I could go.
All I can say is I'm glad I didn't have to back up!