Well yesterday in WSG i found a very weird glitch in Blizzards WSG alliance tunnel which let you see inside the tunnel (even see people run up and down there, don't know if you could target them and shoot as i only have melee class.). This all sounds very weird and a bit hard to explain so I'll just post some pictures as they tell more then 1000 words
Map (where i was standing):
A clip when i had to much out zoomed (but you can see more clear where i was standing):
And here you can see some silly warlock running:
And here's another screenshot when i was a bit off from the other spot:
It's not really hard to find the spot the only thing that can be hard is to find the perfect zoom and use of this but i hope you find something more useful out of this then me looking if the flag carrier was running slope or tunnel.
ps. sorry for the big pictures but i was a bit lazy and just took them from my wow folder.