Enter zone from world into rock

If you enter a zone from the world map and the southern portion is blocked off at the bottom from the world map you can enter it still, and you will appear within the rock.

Low significance, sort of abusable (you can use it to get to the southern edge of a zone that you otherwise wouldn’t be able to get to without digging there, which is only really a even a mildly useful exploit in the mountains if when traveling south).