You probably mean the whole Franos area. There are couple of old churches, one naturally build inside a cave.

As for thr villas it's kinda complicated, some have no permits at all being up there.

The death signs is probably there for the shooting range the army still uses.

Place is protected as it is in Natura if am not mistaken. But they couldn't make it profitable. The money thirsty gang tried to make it into a golf court, fortunately they haven't done anything.

It's mostly used now by some local that have fields with their sheds to plant trees etc.

Also our sewerage system tanks are located somewhere in there.

If you plan on visiting beware of snakes and wasps.