It was discovered by Lieutenant-Colonel William Paterson's party when they were engaged in an exploratory visit to the Hunter Valley during July 1801.
ɪt wʌz dɪskˈʌvɚd baɪ luːtˈɛnəntkˈɜːnəl wˈɪljəm pˈæɾɚsənz pˈɑːɹɾi wɛn ðeɪ wɜːɹ ɛŋɡˈeɪdʒd ɪn ɐn ɛksplˈoːɹətˌoːɹi vˈɪzɪt tə ðə hˈʌntɚ vˈæli dˈʊɹɹɪŋ dʒuːlˈaɪ wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd wˈʌn.