Aboriginal people are believed to have arrived as early as 60,000 years ago, and evidence of Aboriginal art in Australia dates back at least 30,000 years. Several states and territories had their origins as penal colonies, with the first British convicts arriving at Sydney Cove in 1788. Stories of outlaws like the bushranger Ned Kelly have endured in Australian music, cinema and literature. The Australian gold rushes from the 1850s brought wealth as well as new social tensions to Australia, including the miners' Eureka Stockade rebellion. The colonies established elected parliaments and rights for workers and women before most other Western nations.