WE drove up to Hell's Canyon the other day. IT is the deepest river gorge in North America, up to 8000 feet in places. Of course, we only had one day and it takes 3+hours just to get there. Sigh. Up it goes on the list of places we need to go back and spend more time.
The kids were really uninterested for the most part.
WE drove down along the river and never even made it to the canyon rim. Ahh...A reason to return.