JohnL says that the Marston Slide is on North Brother, but I would swear that skiguy's photo shows a slide on South Brother. North Brother is the mountain farther left, hidden back in the clouds, isn't it?
So is that actually the Marston Slide in that photo, or is that some different slide and Marston Slide is unseen? I'm having trouble figuring out where Marston Slide would be if it is really on North Brother. I don't recall seeing any slides at all on North Brother when I was actually on the mountain.
If that slide in the photo is on South Brother and is Marston Slide, did the old trail follow the present trail but take a right turn somewhere (like near that little pond that I recall passing in that real wet stretch of trail) to head for the slide, or was the old route completely different from the present one?
I just looked again at JohnL's photo, and I can now read that the middle sign in his first picture says clearly "South Brother Slide," and his photo album is called Marston Slide, so I guess that answers my question about which mountain the slide is on. I can't figure out where the signs themselves are located, however. Are they right near the Perimeter Road?