The valley has been known for its black fire-opals, and some mining operations in the area will allow civilians to hunt for the precious stones for a fee.
ðə vˈæli hˈæzbiːn nˈoʊn fɔːɹ ɪts blˈæk fˈaɪɚɹˈoʊpəlz, ænd sˌʌm mˈaɪnɪŋ ˌɑːpɚɹˈeɪʃənz ɪnðɪ ˈɛɹiə wɪl ɐlˈaʊ sɪvˈɪliənz tə hˈʌnt fɚðə pɹˈɛʃəs stˈoʊnz fɚɹə fˈiː.