Arkansas is home to many caves, such as Blanchard Springs Caverns. The State Archeologist has catalogued more than 43,000 Native American living, hunting and tool-making sites, many of them Pre-Columbian burial mounds and rock shelters. Crater of Diamonds State Park near Murfreesboro is the world's only diamond-bearing site accessible to the public for digging. Arkansas is home to a dozen Wilderness Areas totaling . These areas are set aside for outdoor recreation and are open to hunting, fishing, hiking, and primitive camping. No mechanized vehicles nor developed campgrounds are allowed in these areas.