John Wadsley’s Brighton, Central Highlands, Derwent Valley and Southern Midlands Councils Joint Land Use Planning Initiative – Stage 2 Heritage Management Plan of July 2010 reports: ‘After the initial period of European settlement from 1803, a large influx of free settlers and pastoralists in the 1820s saw a major expansion of European influence and land grants in the central and midlands areas of Tasmania. Settlement along the Derwent, Jordan, Clyde and Ouse rivers forced local Aboriginal bands from traditional hunting grounds and increased tension between settlers and tribal groups. Conflicts flared in a number of areas, with local farmers and vigilantes attacking Aborigines and retaliation by tribal groups attacking road gangs, stockmen and homesteads.
In 1828 Governor Arthur declared martial law against Aborigines after failed attempts to divide Aboriginal lands from the “settled districts” to reduce the number of attacks by tribal groups. By 1830 the number and frequency of attacks by and on had reached such a level that Arthur decided to launch a full scale military operation against the indigenous population in the southern Central Highlands, southern Midlands and south east areas. This became the so-called “Black Line” which was intended to round up Aborigines and move them from the settled districts. By 1831 some hundreds of Aborigines and settlers had been killed over land occupation and dispossession of traditional tribal lands. The Aboriginal population in the Midlands and Central Highlands was by now very small, probably less than 100. Many traditional hunting areas had been cleared of tribal groups allowing further expansion of pastoral activities. The so called “conciliation” process under George Robinson eventually saw the remaining Aboriginals moved off their traditional lands to Flinders Island by 1834, and then to Oyster Cove in 1847.’