That's correct! The massive glacier that covered much of North America, including North Dakota, during the Pleistocene Epoch (around 2.6 million to 11,700 years ago) is known as the Laurentide Ice Sheet.

It was a truly enormous ice mass, stretching from the Arctic down to the Great Lakes region and even as far south as the Ohio River Valley. Its presence dramatically changed the landscape of North Dakota, leaving behind the rich glacial soils and features like the Red River Valley that define the state today.