4-mile hike with a 937-foot elevation gain into the canyon narrows, with walls of water-polished marble and blue-gray conglomerate rock. The best examples of polished marble occur in the first quarter mile into the hike. At about a half mile, the canyon opens up to an expansive gravel wash, marking the top of the lower canyon, and the place where many people turn around, making it a very rewarding, short 1-mile hike. From this point on, the canyon narrows again and there are more examples of the “mosaic” conglomerate rocks on the canyon walls. Also, there were more and more boulders providing obstacles to climb over. Eventually, we came to a 20-foot dry falls totally blocking our passage. However, we found a bypass around it, which still was a bit sketchy. At the two mile point, we really came to the end of the road at a 30-foot dry falls. Time to turn around, this time maneuvering down the slippery boulders.