A few years ago we spent several days at Chaco and hiked the whole place looking at each artifact building carefully. It is incredible. I always felt like the rough road was there for a reason. Otherwise, all the tourists would run in for the day, climb all over everything and potentially injure one of the most sensitive archeological sites in North America.
The road? Unforgettable and a real destroyer of all things mechanical. There was a couple ahead of with a pickup and a pull behind trailer about 26 feet long. He was going faster while I was driving about 10 or 12 mph. We ended up camping next to each other and he said he didn't even feel the road in his pickup and then...…..then...…….he opened his trailer and found stuff all over the place, two cabinets barely hanging from the wall and a general mess. Water was dripping out of the bottom.
Bet he never goes back but if he does he drives 8-10 mph.
We were in a 24 foot Gulfstream BT Cruiser on a Ford 450 and had no damage at all to the rig...…..our dental bill was large when we got home

. You talk about a teeth rattler.