Colac
Colac was a Pama-Nyungan language once spoken in Australia.
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Gulidjan (Coligan, Kolijon, Kolitjon), also known as Kolakngat (Kolacgnat, Colac), is an extinct Aboriginal Australian language of the Gulidjan people of the state of Victoria, Australia. There is very limited data available on the language, but linguists have suggested that it is a mixed language, containing elements of neighbouring languages.
From Wikipedia · Colac language · CC BY-SA 4.0