These valleys tend to be older than the north-south valleys (south of Stanton.) Some of the broad valleys existed long before glaciers turned the river southward. In 1950, one of the broad valleys was dammed to make Lake Sakakawea. The Red River, like the Missouri River, has two life stories. read more
The eastern part of the state was included in the Mississippian culture, which in 1200 CE was transitioning from its Early to Middle form, thanks to the Medieval Warming Period. read more
Eons in the making, Missouri's geology naturally gives rise to caves. read more