A black hole glitch sometimes comes in a park. This error is very tricky, what happens is that the mapdata of the landtile is changed into something else, in this way rct2 misses a landtile and that cause the black hole.
You can fix the black hole in this way:
First we build a landtile we can track next to the blackhole:
We search for the landtile, this is what I find:
You see that after the landtile there are two objects but ingame we dont see any objects, so we will change those two objects in landtiles again:
In this way we recovered the landtile that was missing, the other thing will be removed later by the game so you can use it again.
And this is how it looks ingame.
Thanks to faceman for providing the black hole




