[7] Gangalu (Gangulu, Kangulu, Kanolu, Kaangooloo, Khangulu) is an Australian Aboriginal language spoken on Gangula country.[8] There was a ceremonial bora ground behind what is now the main street of Bileola and the local entombment custom was to place the skeletal remains of their dead in hollowed out burial trees which were specially marked with red ochre.[10] British colonisation began in 1854 when Frederick Morton established a large squatting pastoral property in the area which he named Prairie.This leasehold comprised around 500 square miles of land in the Callide valley and Morton built his homestead not far from the present day location of the town of Biloela.Morton's group was either warned at the last minute of the impending ambush or, according to historian John Bird, they were beaten back by the Aboriginal counter-attack and forced to retreat.[12] An Aboriginal survivor of Douglas' raids named Etamitcham later described how as a child he and his family were chased over the Kroombit Mountains to avoid "being shot down.[4][5] The Government dockyards in Sydney were known as Biloela during 1871–1913 in an endeavour to remove the perceived stigma of the prior Cockatoo Island convict establishment.[1] Biloela has a humid subtropical climates (Köppen: Cfa), with hot, wet summers and mild, dry winters with cool nights.[35] Callide is an open-cut mining operation providing low sulphur, sub-bituminous thermal coal primarily for Queensland's domestic power generation.Confirmation came in 2020[37] with the first ichnological descriptions of tracks originating from Lower Jurassic (Hettangian–Sinemurian) aged Precipice Sandstone from the Callide open-pit mine.Purportedly hundreds of small- to medium-sized three-toed tracks resembling bird footprints were observed in the overburden dumps associated with the Dunn Creek Mining area in 1998, with others noted and photographed in 2010, enough to create a virtual 3D model via photogrammetry methods.The 18-centimetre (7.1 in) long blunt-toed track was attributed as registered by a medium-sized Anomoepus-like ‘Anomoepid’ track-maker and resembles those of ornithischian footprints found from the only other Early Jurassic Australian dinosaur fossil sites: Mount Morgan and Carnarvon Gorge, these being the first to be discovered preserved as an impression rather than as track infills.The Callide Dam was constructed in 1965 to supply water for a nearby power station in Biloela in the state of Queensland, Australia.Callide Dam holds 136,300 megalitres (3.60×1010 US gal) at an average depth of 10.5 metres (34 ft) and a surface area of 1,240 hectares (3,100 acres) at full capacity.In April 2020 they were awarded costs of more than A$200,000 against the federal government, for lack of procedural fairness in assessing their youngest daughter's claim.