Thanks, Hike of Your Life. And here's the same spot in 2011. This big rock (bigger than the Whitney Portal Store) is just past the store on the road that loops around and down to the day-use parking.
If you compare this picture with the one above, you can see the lense/crack in the upper right area.
(Click for a larger view)
I took these to show the beginning of the old trail, which still is easily followed, and connects to the main trail just after it crosses the North Fork Lone Pine Creek.