Below is the quote from the Great Smoky Mountain National Park of its "Title 36 Code of Federal Regulations , Chapter 1, parts 1-7 authorized by US Code Section 13" with specifics to this area. Simply put, if you have not made it to Little Duck Hawk Ridge before the closure, you are too late. Its closed....
Section 1.5 deals with public closures. Here is the statement:
"Trail and Backcountry closures
The rocky ridge adjacent to the Alum Cave Bluff area,commonly known as: "Eye of the Needle", "Little Duck Hawk", and "Raven's Roost" is closed to public access. The closed area is a narrow rocky ledge that runs in a north/south direction. Closure signs will be posted approximately 100 yards from the junction with Alum Cave Trail along a manway leading to the mentioned ridge. This closure is to prevent disturbance of nesting Peregrine Falcons. The success of Peregrine Falcons in raising their young is significantly decreased by human disturbances. Successful nesting has been observed."
I have seen and heard the falcons! What a sight. One day I heard it fly over me before I saw it. Magnificent! So, I respect this regulation in defense of the falcons.
Below are a few pics from before the closure. I climbed out to the hole in the rock and took a picture of Alum Cave then went to Alum Cave and took a picture of the hole. I am glad I did it when I did!
Here is Alum Cave from where I was standing at the hole in the rock at Little Duckhawk Ridge. Note the hikers standing under the overhang.