Had a bit of a discussion with my gaming group about map setup the other day.
The rules state that "players may not place tiles so that a mountain(red) or water(blue) border is touching another parallel mountain or water border". This is followed by an illustration which shows that a mountain border touching a water border is a no-no.
The question we have been discussion is then wether or not a mountain border is allowed to touch another mountain border and likewis with the water borders. From the text it can be interpreted both ways. It does make sense that you can´t place mountain and water next to each other as this would make that border impassable for all practical considerations (only the elves´ pegasus riders would be able to bypass it). However 2 mountains or 2 water adjacent to one another would make it passable using the normal rules (winter freezes water and mountain pass tactic card).
So it does seem to me that the only practical reason to ban mountain-to-mountain and water-to-water would be to assure that the map does end up with a certain amount of features which must be "worked around" so to speak and to avoid people from just placing mountains back to back to maximise the open board approach where armies can go where they please (which is as good a reason as any to keep the borders apart, in my book).
Any and all thoughts are appreciated.
End of rant...