ABC Online | Biggest rodeo in the southern hemisphere brings big crowds to outback Queensland ABC Online While 1-tonne bucking bulls turned heads at the southern hemisphere's largest rodeo this weekend, it was record numbers that pleased organisers the most. Despite being held 1,800 kilometres north-west of Brisbane, the Mount Isa Mines Rotary Rodeo ... Rodeo no child's play for junior cowboys Punters share their favourite parts of Mount Isa Rodeo Mount Isa Rodeo 2017: Friday action | Photos |