They should call it the Grand Crack in the Ground. Much more than just a crack. It's and experience.
The road to get to it is awful. Horrible bumpy washboard for a couple miles. Driving faster is more comfortable than slow but it's terrible either way.
10 minute hike from the parking lot to the Crack. Then it's as much exploring and hiking as you'd like. Once you get to it go to the right. And make sure you sign the guest book.