Nahh, not quite. There's a ramp not far inside the entrance and a distinct curve right at the entrance so yeah, you can't really see light 800 metres away. But I've only been in it three times and all at night. Maybe it meets the other tunnel up past the submergence.sydnavigator wrote: I haven't been inside but apparently it runs really really really straight, enough to see the light at the end of the tunnel from 800m away.