Regardless, it's a very strange area and there's a simultaneously sad and eerie vibe to the whole place.
If you don't mind scrolling down about half way through the page, you can read an interesting (albeit fairly incomplete and seven years out of date) history of the cemetery and how it came to be abandoned here. There's also some interesting information about the cemetery and the surrounding area on the Forgotten NY page. Here's another article on how volunteers have started work on cleaning up the cemetery. That last article was written less than a month ago which would explain why, the last time we drove past the area, there wasn't any work done to it and why the work that has been done to it since looks so fresh. They've still got a ways to go before restoring the land to any sort of proper burial ground. I'm kind of glad I got some pictures before it is all cleaned up though. It's much stranger in its current state than it would be all spiffed up.
A few pictures...
Some of the pictures are a little washed out. It's dark in there even during the day time and I had to use a flash when I didn't really want to. A lot of the graves are really old an in terrible shape. Some of them are also very small (if you look you can see how some of them aren't much bigger than the leaves around them) and you can trip over them if you're not careful. Years of partying has resulted in some odd litter, mostly beer cans and stuff, as well as a fair amount of vandalism.
The last four... wierd how stuff like this just gets forgotten about and falls into disrepair, especially when you consider that, although SI is the most remote of the five burroughs, this is still technically part of NYC proper.