A massive tsunami that ran 481 meters — two-and-a-half times the height of the Calgary Tower — up the wall of a fjord in a popular spot for Alaskan cruises provides valuable lessons for anyone who spends time in steep, mountainous terrain, new research shows. The ‘near-miss’ tsunami in Tracy Arm fjord, 80 kilometres south of Juneau, Alaska, was the second highest one ever recorded. Despite its size, no one was caught in the wave that hit around 5:30 a.m. on Aug. 10, 2025. The study, which will be published on May 6 in the prestigious journal Science, was conducted by a team of international researchers at multiple institutions — including two scientists from the University of Calgary. Find the full paper here: https://10.0.4.102/science.aec3187 Citation: D. H. Shugar et al. Show more