It means "Vacancies", it could be founded in border towns and vilages close to german east borders.
It is like on the places like Brzezinka, Auschwitz, Hiroshima, Gulag archipelago etc. are like flashing banners that is visible from the distance for the Horrors, screaming into the darknes:
"HEEEY. EARTH HERE... WE KNOW YOU ARE OUT THERE AND WE ARE SO EAGER TO HAVE YOU BACK THAT WE BEHAVE LIKE YOU ARE NOT NEEDED. WE DONE WELL WITHOUT YOU SO PLEASE COME AND FINISH THE JOB. WE HAVE BEEN SO HARDWORKING STUDENTS OF YOURS, PLEASE DONT MAKE US WAIT MUCH LONGER OR THERE WOULD BE NOTHING LEFT FOR YOU TO HARVEST..."
As they are +6 Domains aspected to what I imagine should be considered of path of Horrors, there is +6 peak and as such there is great possibility that building a bridge would be much easier... Hope taht places like this highly guarded by astral means...
What scares me, that ie on Siberia there would be dozen of such places that are unknown to anyone...but those who are looking for them...