The dialect is spoken west of the Soča River in the Gorizia Hills, extending from Lig in the north, along the Soča River in the east, up to Oslavia (Slovene: Oslavje) and Gradiscutta (Gradiščula) in the south and to Dolegna del Collio (Dolenje) in the west.

Notable settlements include Hum, Kojsko, Kozana, Šmartno, Medana, Dobrovo, Plave, and Anhovo.

[3] In Italy, it is spoken in the northeastern area of the Province of Gorizia, in the municipalities of San Floriano del Collio (Števerjan), and in part of the municipalities of Cormons (Krmin) and Dolegna del Collio (Dolenje).

It is also spoken in the western suburbs of the town of Gorizia: in Piedimonte del Calvario (Podgora), Piuma (Pevma), and Oslavia.

These dialects distinguish between circumflex and acute accent on long vowels; short ones always have the same pitch.

The vowels *ę̄ and *ā are now both pronounced as aː, the first one in Kozana as oː if not followed or preceded by a nasal consonant.

[8] In closed syllables, short *è turned into eː, *ò into oː, and *ì, *ù, and *ę̀ into əː, lengthening in the process.

Final *i, *u, *ę, and *ǫ are not pronounced anymore; the only exception is the third-person singular ending -i (e.g., (on) vȋdi → vìːdẹ).