Sadly im sure i read that Polphail is now being demolished. A few my graff mates had been, to put their marker on it.
On the Abandoned train tunnels. There is one were i grew up in Parkhead and it strecthes all the way to Dalmarnock. We were always too scared to go into it though.
The one time we did get the balls to do it, we packed up like the bloody goonies. Torches, sweeties, plasters and a big stick....usual kind of adventure stuff. Got to the entrance, turned on the torches and low and behold there was a bloody dead dog. We never went near it again haha.
Some pics here of the Tunnels in the East End. There is even an old blocked off toilet on London Road. The foundations must still be there. Ive always wondered what it's like.
http://www.hiddenglasgow.com/forums/viewtopic.php?f=15&t=69&start=285