Planning a trip this week to check out locations. Going east to Kamloops and check out Cache Creek and the surrounding area. Then south to Osoyoos. This is all desert area. Then if time permits and haven't found what I'm looking for, south into US to Scablands near Spokane, and south to east of the mountains near Seattle to see Frenchman's Coulée and the Ginko Petrified Forest State Park, the Boulder Coulée.

I'll post pics as I go, please comment if you want me to drill down into any specific areas after seeing some photos of them.