[Aphfaneire]

Thanks for the help, i got so confused about it that i checked google earth straight after posting and figured out that the drumcondra track is the one that goes to the tunnel, if you use the points there. So now i understand it, kind of a maze anyway, and most northerly track going under the northern line couldnt a similar service exist, or was the whole re-alignement of the specer dock area to alow that line to be used for the interconnector, cause it looks useless now.