Believe me, I know. The mountains were all but invisible during our drive out. We were extraordinarily fortunate to see them during our full day in the park AND during our drive out. I hesitate ever to return there, because the odds of anything close to a repeat are minuscule.
you were more lucky than you might realize, that is a Lenticular cloud in the background. They are facinating cloud features that mostly form in mountainous regions of the world. Paul