Perhaps someone who as been to this actual spot can be more authoritative but I have been to what I think are similar locations and my quick answer would be that there are crevices like the one in this story.
My point is that many have said its impossible she just vanished so quickly without any evidence and that this lack of any sign of her is evidence she was never there: but its really not.
She gets lost, she back tracks, she climbs up on some rocks to get a better view to find her car and she falls just perfectly into a crevice. No hat, no beer, no nothing. An archaeologist will find her in 1000 yrs.
I would take the dogs up to that spot where she allegedly took the 360 picture. I might go back there if I knew I had a great view from that spot.
No. There are no crevices, it's not Mt. Everest. I've not been to that particular road, but have been around remote areas very near there. Btw: yes there are a few old mines, digging areas, etc. One can generally see them on approach though.
Edit: sp