Gardner Cave up in northeast Washington was quite a tour. My family took a trip there in 1966, or so. Still impressive today as I biked there in 2009.
Few people even know of its splendor.
I also visited Boundary Dam, not far from the cave. Could "knock them both off" within just a few miles.
Next day, the ride to Spokane. 96 miles. I didn't expect to have that long a day, but road construction took me to a different route so I missed the motels in north Spokane. Ended up downtown in good time anyway. Might as well stay downtown. Feel good and enjoy walking around this city. Lots of historic buildings.
My motel is built around a gay bar (Dempsey's Brass Rail). I could go, but I look road worn.
One more night in Spokane and then head for the Palouse area.