On 5 Feb, 01:57, (Colin Rosenstiel) wrote:
In article . com,



(SimonD) wrote:
I was standing half way along the southbound Victoria Line platform
at Kings Cross, when I happened to look up through the vents in the
roof. Through them, I could see daylight, coming in through what
appears to be another tunnel running more or less parallel to the
Victoria Line.

I've used this platform many times, but have never noticed this
other tunnel before. Is it new (in some way connected with the
northern
ticket hall works), or has it always been there? If so, has
something been done to allow light into this tunnel?

Or, has it always been like this, and I've never noticed.

Are you sure it's not artificial light in another tunnel?

I had another look today, and it is daylight.

The tunnel is lined with black cast iron segments. Invert level
appears to be just above soffit level of the Victoria line tunnel, and
the whole thing is about a tunnel diameter distant from the Victoria
line line.

Simon