16, 2025. (Mary Steurer/North Dakota Monitor) North Dakota could be getting its first-ever state rock: a cola-colored stone called Knife River Flint. The idea came from a group of young geology ...

The slab, measuring 24.1 by 20.1 centimeters, is made from locally sourced vesicular basalt, matching the geological composition of rocks in the ... features 39 unique symbols, some of which ...