There are many historical spots to visit along the Palouse Trail. Since you are there, you should point them out.
They have Fruit
They have Antiques
There are also Icees (like Slurpee) at the gas station
There are few small towns we can tour through
Check out small shops and park
Trail take you right to campus
This might be a good pickup point or place to take a break
These guys get terrible reviews
Open from Memorial Day to Labor Day
Location: Rosa BLM Rec. Mile post 6
Hwy. 821 Canyon Road
3 to 4 hour float with breathtaking views
Start Point: Umtanum 46.8554, -120.4827 ?
End Point: Roza 46.7652, -120.4583
You need a Discover Pass to park at many of the Yakima Canyon River Campgrounds and Recreation Sites
You may also need to pay a $5 day fee per car, so bring some cash