After a mile or so, I was able to look down out across the valley where the Encampment and West Fork rivers came together.
I think the old road I was following is known as the Ellis Trail. The trail/road number is 499 on some maps. It definitely gets some travel, but not a lot. And, most of it is probably in the hunting season. As I said, I saw only one group of 4 people (each on an ATV) the whole day on the road/trail/whatever. And remember, this on the 3rd of July. So, normally considered a pretty busy time up in the mountains. It's quite possible that everyone was just well camouflaged : )
Someone had cut a large enough chunk of the tree so that small ATVs could get through. There may, or may not, be a reason that they left the majority of the road still blocked. Hmmm.