Looking toward the east along Highway 140, a few miles past Adel, the escarpment of the fault bounding this valley is quite sharp, though nowhere as high as many others in Oregon's Basin and Range. But what really got my attention was the (subtle, at this scale) clear evidence of pluvial lake shorelines in the talus at the base of the cliff. Right click on the photo, and open it in a new tab for full-size, and those shorelines- there are quite a number of them- should really pop. Note that they are in the loose rubble at the foot of the cliff, and not to be confused with the clear layers in the basalt. I suspect the latter are from Steens Mountain eruptions.