There are lots of useful reference links at the beginning of this (and every) thread, but I found this to be on of the most handy:
http://www.theindychannel.com/news/...the-two-bodies-were-found-near-delphi-indiana
It has a link to an active google map, and scrolling down below that, about 30 minutes of aerial footage taken the day of the search. If you are having trouble visualizing the lay of the land, or the scale and distances of this case, this one link can be very handy.
"Right click" on the google map, and "open it in a new tab." You can now zoom in and out on the map, and drag and drop it to zoom in on different areas. Then, going back to the original tab (the news story), watch the video. As you do, there are spots when it stops or goes black- don't close the window, as it will start playing again (and I don't know if this was an issue in the actual chopper footage, or just my internet connection buffering.)
So, while you're watching the video, you can switch back and forth to the google map and really get your bearings. The video was taken at midday during the height of the search, so there is good lighting, they repeatedly circle and zooming and out on the entire area, and if you look at the roads and landmarks (cemetery, creek) you should really start to be able to overlay the labelled map with what you're seeing from the air. And you can also see the type and density of vegetation, height and scale of Mono High Bridge, and steepness of the hills.
I hope these comments are helpful to someone. Apologies if I've over-simplified it, sound redundant, or everybody's already seen this, but I know different folks have different gifts (or not) for map-reading and orienting themselves. Just trying to help. jmo