The viewer of this map has a bit of (experimental) JavaScript. It may not work on every browser out there, but at least
it works on Firefox 54, Chrome 60, IE11 (must allow ActiveX though..) and probably some versions that are a little older.
Use your mouse (perhaps it works with fingers on a tablet/phone) to scroll through the world.
There's a minimap to show you where you are.
You can also drag the minimap for fast-travel!
The green lines indicate where each door (and sometimes map edge) leads to. Arrows indicate one-way tickets.
The brown arrows are guestimated (the only ones that weren't in the Let's Play I watched).