Adding a cave to the "The Center" but I keep getting teleported to the surface

I am trying to add a cave to one of the islands on The Center. I used the visibility tool to make a hole in the landscape and I made a separate level for all of the interior of the cave. I havent sent up a streaming volume yet because I am not quite sure how large the cave will be in the end.

The problem is that any time I walk into the cave in the editor it teleports me back up onto the surface and I cant figure out what is doing that or how to make it stop.

Any help would be appreciated.