Named for a fur trader's Fourth of July celebration in 1830, this huge rock became one of the most famous of all Oregon Trail landmarks. The giant piece of granite is 1,900 feet long, 700 feet wide, and 128 feet high.
The landmark was a favorite resting place for travelers along the trail. Called the "Great Register of the Desert", more than 5,000 names of early emigrant were carved on this boulder.
Starting the trail in the early spring, emigrants along the Oregon Trail hoped to reach Independence Rock by July 4, Independence Day. If they had not arrived by then, they knew they were behind schedule.