le'be' tlhIngan Hol. rurbogh latlh Del https://www.theguardian.com/world/2019/mar/28/canadian-film-made-in-haida-language-spoken-by-just-20-people-in-the-world

“...a language that only about 20 people in the world can speak fluently.”

“...unrelated to any other language, and actors had to learn it to understand their lines.”

“...uses a lot of ‘guttural sounds and glottal stops’...it differs from English, let alone other languages...”