A geotechnical engineering professor from Kasetsart University provides detailed analysis of the Tibet-Nepal flash flood and landslide disaster, explaining how glacier lake outburst floods (GLOF) and natural landslide dams can catastrophically fail without warning. The expert identifies 13 key observations showing the water mass behaved like a dam breach, likely triggered by ice-rock avalanches damming a river channel and subsequently rupturing. This "sunny day failure" phenomenon—occurring even without rain—is particularly hazardous in high mountain terrain where detection and mitigation are difficult.