[EVERYTHING] Why doesn't the Night's Watch have outposts beyond the wall?

For example, why do they rely on Craster? They've been around for thousands of years, but they still have nowhere of their own to seek refuge once they head north.

I know that they aren't even manning all the castles along the wall, but we have heard plenty of stories about Rangers getting caught north of the wall for months at a time.

Submitted April 29, 2017 at 11:57AM by If_If_Was_a_5th http://ift.tt/2ps45iT