Sognamål

Sognamål (literally "Sogn language", in Sognamål; Sognamaol) is a Western Norwegian dialect which is spoken in the area of Sogn. One of the most prominent features of Sognamål is the pronunciation [aʊ] instead of [ɔː] in many words, i.e. exactly how the letter "á" is pronounced in modern Icelandic. The folk/black metal band Windir from Sogndal used the Sognamål dialect in their lyrics.

One of the most peculiar features of the Sognamål vowel system is that it features neither close back vowels, nor diphthongs that end in that area.

...
Wikipedia