We reach the end of Grand Coulee and Banks Lake.  Just beyond is Dry Falls.  Not so interesting you might say.  You’d be surprised. The cliff receded over 25 miles as violent flood waters blasted away layers of basalt.  The water found another path and the flow diverted.  A wall of rock 400 feet high and 3 ½ miles across stands now, dry, as a fantastic reminder of the power of natural events.  Much cooler than you likely suspect.