I have been to the Twins again yesterday. Upon looking at the location at a lower point of view I have to amend the pointer a bit. The new location isn't absolute as I was unable to stand there taking my GPS reading. It was an estimate based on a few new photos I took yesterday.
I even tried to locate the shelter but was unable to get through the under growth. It cannot be seen from above.
I'll post a link of the photo later.