The Withrow Moraine and Jameson Lake Drumlin Field is a National Park Service designated privately-owned National Natural Landmark located in Douglas County, Washington state, United States. Withrow Moraine is the only Ice Age terminal moraine on the Waterville Plateau section of the Columbia Plateau. The drumlin field includes excellent examples of glacially-formed elongated hills. (Coordinates: Withrow Moraine intersects Jameson Lake - 47°41?15?N 119°37?29?W? / ?47.6875°N 119.62472°W? / 47.6875; -119.62472 ).