The father crushed to death in a freak landslide in the NSW Blue Mountains was a high-flying finance lawyer based in Singapore who was on holiday with his family.
Mehraab Nazir, 49, and his nine-year-old son were killed when they were hit by falling rocks while hiking along a popular walking track at Wentworth Falls on Monday.
His wife, Ana Nazir, 50, and their 14-year-old son remain in a critical condition in hospital after undergoing emergency surgery for serious head and abdominal injuries.
The couple's 15-year-old daughter was unhurt and was praised for her composure after the accident, when she manage to flag down other bushwalkers and phone triple-0.
"I don't know where we are," she told the operator, before a massive emergency operation unfolded in dense bushland.
Mr Nazir and his family moved from London to Singapore more than 10 years ago when he became a partner of law firm, Watson Farley and Williams.
A graduate from the University of Exeter, he was recognised for his "strong experience" by the Asia Pacific Legal 500 in 2013.
Anya Panthaky posted a message on the Zoroastrian Association of NSW Facebook page, describing their deaths as an "immense tragedy".
She said the outpouring of generosity from the community had been "heart-warming".
"A number of you have reached out… offering to help and we thank you," she said.
Ms Panthanky revealed that relatives of the family had arrived in Sydney and the couple's 15-year-old daughter was being comforted by her godmother.
NSW National Parks and Wildlife has closed most walking tracks in the Blue Mountains while it carries out a safety review.
Local hiking guides believe months of heavy rain caused the ground to become unstable, triggering the landslide.