It is in the Abruzzi, beyond Trevi.

Did you ever hear of the Serra di Sant' Antonio, where so many people have been killed ?" "Diana! I should think so! In the old days--" "Bene," said Gigi, "Fillettino is there, at the beginning of the pass." "Tell me, Gigi mio," I said, "are you not very thirsty ?" The way to the heart of the wine carter lies through a pint measure.

Gigi was thirsty, as I supposed, and we sat down in the porch of my inn, and the host brought a stoup of his best wine and set it before us.
"I would like to hear about the crazy foreigner who is gone to live in the hills among the brigand," I said, when he had wet his throat.
"What I know I will tell you, Signor Conte," he answered, filling his pipe with bits that he broke off a cigar.

"But I know very little.

He must be a foreigner, because he goes to such a place; and he is certainly crazy, for he shuts his daughter in the old castle, and watches her as though she was made of wax, like the flowers you have in Rome under glass." "How long have they been there, these queer folks ?" I asked.
"What do I know?
It may be a month or two.