It honestly always makes me sad to see trails that used to be train tracks. We used to have such a fantastic train system in America, linking America together just as much as the network around Japan or Europe. But then bit by bit, they destroyed it, feeding us the nonsense that "America is just too big for rail" out of one side of their mouth while ripping up the remnants of the amazing system we used to have. I love the new trails, mind you, but if we still had a decent train network we wouldn't have had to destroy so much of nature to make bigger roads and we would still have room for trails.
Phew... sorry. The topic makes me sad and angry.
All that said, it does look like a really nice area. I'd love to walk that entire way. And I agree with you, that last photo of yours is the best. Amazing shot!