South East Queensland was home to around 20,000 Aboriginals prior to British occupation. The local tribes of the area were the Yugarapul of the Central Brisbane area; the Yugambeh people whose traditional lands ranged from South of the Logan River, down to the Tweed River and west to the McPherson Ranges; the Quandamooka people whose traditional lands encompassed the Moreton Bay Islands to the mouth of the Brisbane River to Tingalpa and south to the Logan River; and the Gubbi Gubbi people whose traditional lands were known to exist north of the Pine River, to Burrum River in the north, and west to the Conondale ranges. According to history researchers the Aboriginal population declined to around 10,000 over the next 60 years.