idea for map - might not be possible

[jwl1000]

ok so i was thinking, what if there were maps with "doors"? what i mean is, you know how there are sometimes isolated areas with only one entry/exit spot? well, what if they had one of those, but there was another region that could accesss it, but only every few or so turns. randomely, it could turn on or off, to grant passage or not.
i don't know if im being clear. do you understand?

[>(FM)<]

i understand and its a great idea but... i don't think its possible...

[Joshua]

i understand and its a great idea but... i don't think its possible...

Other way round.

[royalblue]

We could always have a river. The river, or whatever not would be called, could rise to separate regions and then fall back a few turns later to open them up again.

Or it could be a line of transportation to connect many regions, but not owned.