Question: An indigenous peoples of Australia, the Peramangk, warned who that the area of Hoffnungsthal, South Australia was prone to flood, but were ignored?

Indigenous archaeology is a form of archaeology where indigenous peoples are involved in the care of, excavation and analysis of the cultural and bodily remains of peoples they consider their ancestors.  It has been largely developed as a sub-discipline of archaeology since the late twentieth century, in response to some of the historical inequities in the practice, which developed largely as Europeans and Americans studying ancient cultures other than their own.  Frequently archaeologists who were not members of the indigenous group being studied had led the excavation and care of remains and artifacts.  They often ignored or did not consult the descendents or successors of the people being studied.  The Indigenous desire to participate in the research and management of their heritage is related to activism of the 20th century, which arose in party due to the earlier "intellectual and spiritual colonization" by Europeans throughout the eighteenth to twentieth centuries. <SEP> At the time of the discovery of Brazil by the Europeans, a total of 2,000 indigenous nations, divided into several thousands of tribes existed in Brazil.  The total number of native tribes which inhabited the present day Brazil at the time of first contact is disputed, as well as difficult to ascertain.  The names of large number of tribes who were exterminated as a result of intertribal warfare is not recorded anywhere and so is the case of several smaller tribes who were wiped out by the colonizers.  Curt Nimuendajú gives a list of 1,400 nations in his monumental work Mapa etno-histórico do Brasil e regiões adjacentes, but he ignored many smaller (extinct) tribes in Eastern Brazil, and was unaware of some other tribes which were uncontacted at that time.  Currently only 200 nations (790 tribes) are alive, with no survivors being reported for the remaining nations.  However this doesn't mean all their bloodlines are extinct only their cultures.  Brazilian Pardo and Mestizo population have mostly unknown indigenous backgrounds.  Which can and probably have many of this indigenous peoples as ancestors.  The Bandeirantes once hunted and enslaved indigenous peoples in the then unknown interior of Brazil from the 16th to the early 19th century.  The indigenous peoples were eventually aculturated and integrated into European civilization. <SEP> The Peramangk are an indigenous Australian people whose traditional lands are primarily located in the Adelaide Hills, and also in the southern stretches of the Fleurieu Peninsula in the Australian state of South Australia.  They were also referred to as the Mount Barker tribe, as their numbers were noted to be greater around the Mount Barker summit, but Peramangk country extends from the Barossa Valley in the north, south to Myponga, east to Mannum and west to the Mount Lofty Ranges. <SEP>  Founded in 1847, it was located in an ephemeral lagoon which was dry for the first years of settlement.  Local Peramangk people warned the settlers that the area was prone to flooding, but this advice was ignored.  In October 1853, after a week of heavy spring rains, the village was flooded and many of the houses were evacuated. Hoffnungsthal ("Valley of Hope") is the location of a former German pioneer settlement, located in South Australia's Barossa Valley.  After the cost of a proposed drain was seen as prohibitive, the village was eventually left deserted.  Most of the settlers moved to the Barossa village of Bethanien as well as further a field.