had you played before on a previous version? this was an area that used to be connected to the map but is now disconnected so the load zone doesn't do anything. (i should probably make an actual failsafe for loadzones that don't work)
the only way to get there without debug is to have gone to the area in an older version and then loading up on the new version.
You can either take a gameover by dying or using the give up command in the menu to return to a connected area, or under Settings in the pause menu, at the bottom is the Debug Menu which includes an option to jump to any room (including some of the other disconnected rooms)
Sorry about that!