know multiple routes "out".

[Mortblanc]

here in the states it is common to find whole communities with only one road in and out.

Populations of several thousand that can be penned up like cattle with a single roadblock, fallen tree or flooded roadway.

I am fortunate to live in a rural area that is spiderwebbed with back roads and one lane paths. Most of them follow old game trails that became dirt roads and were then paved when autos became the norm.

From my house I can get to the Ohio River, 10 miles distant, on backroands and float to the Gulf of Mexico on a log if I need too.

In fact, if I towed my johnboat to the river I would be able to travel all the way to the Rocky mountains, 2,000 miles distant, by water. I could go south to warmer climes and never have to paddle upstream for the entire way.

Sorry, I got a bit sidetracked.