The Grand Coulee is a spectacular canyon that was formed by the Lake Missoula Megafloods, colliding into Glacial Lake Columbia, and flowing out into a vast canyon that includes Dry Falls, the largest waterfall known at 3.5 miles wide and many hundreds of feet tall (look forward to them in the next video!). An astonishing place to wander in wonder.
(also, just because due to past experiences I sense it coming, there are plenty of details about Grand Coulee not in here… this is a travelogue, with education as a component, not an outright education video; omission of details should not be construed as making stuff up!)