Independence Rock on the Mormon Trail by William Henry Jackson.
n June 23 they reached Independence Rock, one of the most famous landmarks on the entire Mormon Trail. William Clayton wrote in his journal: "We can see a hugh pile of rocks to the southwest a few miles. We have supposed this to be the rock of Independent." It is an oval-shaped outcrop of granite 1,900 feet long, 700 wide, and about 130 wide. Of the various stories regarding its name, the favorite is that some early trappers once celebrated the Fourth of July there. Mormons climbed it, danced on it, and painted and carved their names on it. The trail passed between the rock and the Sweetwater River in Wyoming.