Honestly, I don’t have much in the way of words. It’s an incredible place. Sunrise is well worth the early start, popular as the main site is. I did a photography tour of the complex, which is designed to be about specific locations rather than historical value. It was wonderful; my guide was excellent, we saw great stuff, and managed to avoid the crowded areas for the most part. I recommend the Wikipedia article if you want information on the complex itself :-).
I can’t figure out how to embed a gallery in my blog, so I’ll direct you to the Flickr site with all my best images: https://www.flickr.com/photos/dchotin/sets/72157650907171146/. Let me know if you have any favorites!!