Shylaja Muralitharan, 42, her husband Chandrasekaran, 47, and their sons Ashwin, 14, and Aarush, 11, were part of a 15-person Australian group trekking toward Mount Kailash on a Hindu pilgrimage when flash flooding hit the Rasuwa region of Nepal on Wednesday morning. They are among 39 Australians identified as missing, with the broader death toll approaching 400 and roughly 1,400 people — mostly tourists — still unaccounted for. The scale of destruction is total. Sagar Pandey, founder of Himalayan Glacier Adventures, flew by helicopter over the area where his 47-person tour group had been staying. He told the Guardian he saw nothing recognizable as human settlement. "The flash flood swept away everything, everything. You couldn't see any human creations." He put his hope of survivors at 1%. At least three separate Australian tour groups were in the affected zone: 15 with Himalayan Glacier Adventures, 11 with Trekkers Society, and six with Kailash Journeys. The Isha Foundation confirmed 11 Australians were among 80 missing pilgrims who had been inside an immigration building when the flood struck. The majority of missing Australians are from New South Wales, with some from Victoria and Queensland. The families waiting in Sydney are operating in an information vacuum. Shylaja's sister Vaishnavi lost contact shortly after breakfast on the morning of the flood. She has spoken with Department of Foreign Affairs and Trade officials but says the family has no visibility into rescue operations. "We do want to know what efforts are being made … we're not aware of what is actually happening there." Also missing are NSW couple Venkatraman Balakrishnan, 52, and Chitra Venkatraman, 46, along with the Iyer family — Sreedharan, Lakshmi, and their adult sons Rishab, 23, and Rudhra, 20. The Iyer brothers played cricket for West Pennant Hills Cherrybrook Cricket Club in Sydney's north-west. Foreign Minister Penny Wong announced the government would deploy three humanitarian response specialists "within the next 48 hours" to supplement Australian staff already on the ground. She acknowledged "the extraordinary scale of this disaster and the remoteness of the affected region mean immense challenges lie ahead." Three specialists for 39 missing citizens in a zone where entire settlements have been erased. The structural question is not whether this particular disaster could have been prevented — glacial outburst floods are a known hazard in the Himalayas that climate change is intensifying. The question is whether the institutional architecture connecting Australian tourists in remote high-altitude zones to consular protection and rescue capability is fit for purpose. The information gap between DFAT and the families suggests it is not.