During the night we navigated from the Snake River and turned south onto the Columbia River. This morning we woke in front of McNary Lock and Dam. McNary is the fifth lock of our trip, after having traversed four along the Snake River. It is also our first lock on the Columbia River as we continue our navigation westward. We are still in the rain shadow of the Cascade Mountains and the defining desert-steppe vegetation. This afternoon we had a chance for a short stroll at Crow Butte County Park to get a closer look at the classic vegetation, sagebrush and other western plant species. We closed our day with a sampling of the local wines from Washington and Oregon vineyards. A flavorful way to end another day navigating the great river of the west.