[Radek]

Once you occur on the 2nd half of the map, you'd better keep a portal there. Naturally, the portal will change place as you will proceed in your investigation but it will be always there. Now, travelling to the 2nd half of the map is no problem: cast Teleport.
Because it's a long way to the 2nd half of the map, I recommend always to check a new portal. Create the portal, save game, go a few steps away, and cast Teleport. You should be teleported to your new portal. If you are then you can rely on the portal and cast Call of Home [img]smile.gif[/img]