Cocky Flies , Geoscience Australia Discovered in the mid-19th century , they have been territories of LOCATION@1 since NUMBER@1 , and contain the only two active volcanoes in MISC@1 territory , one of which , ORGANIZATION@1 , is the highest MISC@1 mountain .

They have been territories of LOCATION@1 since NUMBER@1 , and contain the only two active volcanoes in MISC@1 territory , one of which , ORGANIZATION@1 , is the highest MISC@1 mountain .
