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Ancient River Warren Channel
A channel cut by the Ancient River Warren during the Ice Age, Ancient River Warren Channel contains the Hudson Bay-Gulf of Mexico divide. A lake on each side of the channel provides evidence of the irregularities in Ice Age sedimentation.
Year designated: 1966
Ownership: State, Private
Please remember, National Natural Landmarks (NNLs) are not national parks. NNL status does not indicate public ownership, and many sites are not open for visitation.
Last Updated: June 28, 2012