How did u get there?
I was just outside the depot, not in it.
There are some buses available (i took 38), and after alighting,
it was a approx. 3min walk there. If you walk along the track,
there is an opening which enables you to get to the other side of
the river (as i did), and a long grassy patch (which i did not go
in). I only stood near the opening.
Video: http://www.youtube.com/watch?v=2J5W8_LezBo