Writing Rock State Historical Site - Grenora, North Dakota

These rocks are somewhat of a mystery. The petroglyphs are believed to date somewhere between the year 1000 and 1700. The Plains Indian tribes believe their ancestors carved the symbols on the rocks. Others believe they may have been carved by Norse, Welsh, or Chinese explorers. If so, how did they get to North Dakota ?  Indians believed they could tell the future by how the symbols changed. Some people claim the lines represent maps.  A mystery for sure, but interesting and the drive to the rocks along a rural Montana road is quite scenic and relaxing. The rocks are located on a high hilltop near Grenora, North Dakota.