blˈæk kˈæzəm wʌz lˈaɪkli nˈoʊn ɐbˌaʊt baɪ ðə lˈoʊkəl mˈiːwɑːk tɹˈaɪbz, ðˌoʊ ɡˈoʊld mˈaɪnɚz wɜː ðə fˈɜːst kɹˈɛdɪɾᵻd wɪð ɛksplˈoːɹɪŋ ðə kˈeɪv ɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd fˈɪfti fˈoːɹ.
Black Chasm was likely known about by the local Miwok tribes, though gold miners were the first credited with exploring the cave in 1854.