There are various regions in Eastern Washington including the Palouse and the Channeled Scablands.
Explanation:
The Cascade Mountains divide the state of Washington into two regions: Western Washington, which is the part of Washington continuous with the Pacific Coast. It has a strong maritime climatic influence. On the other side of the Cascade Mountains, Eastern Washington has a more continental climate. There are actually 4 geographical or climatic regions of Eastern Washington: East Slopes of Cascade Mountains; Central Basin, the Okanogan, Spokane, Palouse area; and the Northeastern Mountains and the Blue Mountains region.
