Here is two major boulder opal fields in Queensland.
【 Winton Field 】
Located approximately 1500km Northwest of Gold Coast, this town has population of 900. (experience WINTON)
Boulder opal fields are further 100km from Winton - Opalton, Happy Valley and Jundah is where opals are actually produced.
Opalton was a busy opal mining town with thousands of miners in the early 1900's, but now only about 20 people live here.
Happy Valley mine