that is the one right after the Peanut Tunnel, yes. There are others
I am hoping to do crossunder eventually. Unfortunately I don't feel that the Peacock map gives you a good idea of the nature of the tunnels. Like Darkwater doesn't look too hard on the map, but looking at it on video, definitely a higher skill tunnel like crossunder.
Maybe Adam will make a better map after he completes his Ginnie map.