In my stories, there are two fractions of beings called Shining ones - and regardless of their war, they live (very close to each other) in Nightshine Asylum, an abandoned fortress from an age of civil war on the eastern plains.
Nightshine Asylum was built in northern part of the Cloudy Mountains. It is accessible from Thunder Pass via a very long underground staircase.
The Guardian House was built to provide shelter from snow storms that are very frequent in all the Cloudy Mountains and mostly in Thunder Pass. Also it is used as the gate to Nightshine Asylum.
Unnamed hostile1 fraction (because I still haven't given them a name) lives in the (original) upper part of fortress.
Friendly2 fraction Old Thirteen lives in the (additionally built) bottom part of fortress and attempts to keep unwanted visitors out - for various (mostly security/safety) reasons.
But how to keep unwanted visitors out (of Nightshine Asylum, and mostly Thunder Pass' Guardian House), if you cannot use magic (because it would disclose your presence) and you must keep yourself safe from the enemy (because enemy is much stronger than you) by staying at home.
Reason for not using of ways like physical barricade is simple: the Guardian House must be kept ready to be used (as shelter from snow) by anyone who will need to use it. Outside of the House is not sufficient space for placing of any barricade (Thunder Pass must be passable, it is a trade route) - and inside too, of course, because the House is quite small (only one room sufficiently large for comfortable staying for some hours, for one family with two children).
- 1 - hostile to people, mostly to Desert People
- 2 - friendly to all people, excepting White Hunters