Australia's largest Salt Lake is continuing to flood in what's expected to be the biggest fill in decades. South Australia's Kati Thanda-lake has filled to capacity only three times in the past 160 years and is home to rare wildlife and rich indigenous heritage. Traditional owners say new bans on recreational activities help to preserve the environmental and cultural significance of the lake. But an outback sailing group are opposed to the regulations, which they say are too restrictive.
