Just last year, a massive landslide in Alaska triggered a megatsunami that researchers have now mapped and analyzed— identifying it as the second-highest tsunami wave ever recorded. In the early hours of Aug. 10, 2025, a colossal landslide tore from a mountainside above a softening glacier in Alaska’s Tracy Arm fjord, sending debris into the water below and unleashing a massive wave that reached more than 1,500 feet high through the scenic area. The 1,578-foot megatsunami tore through a scenic