CerebroMater: I checked on this cache this morning, and it is indeed missing.
I am trying to come to terms with the fact that I can't maintain my SF caches the way I used to or would like to. This is a fabulous location because of the view, so I'm going to open the area up to someone that might be able to do a better job at placing and maintaining it than I. I can see this tower every day from the train on my way in to work, but I just can't get to it...