Road through the canyon

You have to go through one final mountain pass to arrive in Death Valley. We found a small road on the map that claimed to be a one-way road over the mountains. We headed up the road, but after only a short drive, we came across a sign that recommended only 4-wheel drive vehicles attempt the pass. Of course we ignored that sign and continued on a little further. However, we decided it wouldn't be wise to continue because the road was so narrow that if we were not able to continue on, we wouldn't be able to turn around either. So we decided to take the safe way into Death Valley. However, once in the valley, we found the exit to the 4-wheel road and decided to explore it on foot. It was certainly too narrow to have turned around in. How it made it around the rocks is beyond me. We hiked up about a kilometre. We did see a few cars coming through where we had chickened out, but I expect it would have been a very slow drive.