The fence is around the group of kerbstones exposed on the east, K51 and the one on either side, it was replaced last year sometime when they replaced all the fencing around the two entrances and it really uglies up the view of dowth from this side. The tree is still there, I just kept moving around until it was against the highest point of the mound and not visible in the photo. You must be using a TFT screen? The mound is almost pure black on my crt but I can see the fence just about if I tilt the laptop screen a bit.