Before and after satellite imagery showed the devastation caused by flash floods in Nepal on Wednesday (26 August) Hundreds of foreign tourists are feared dead on the border between Nepal and the Tibet region, as reports of casualties continue to emerge. Houses, roads and power projects were swept away in Nepal, while rescuers used helicopters to search for survivors and drop emergency supplies to thousands on Thursday. Experts said an avalanche from a glacier was the likely cause in the warming Himalaya region.