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Lituya Bay is a fjord located in Glacier Bay National Park and Preserve on the coast of Southeast Alaska. The name of the bay means "lake within the point". It is 9.0 miles (14.5 km) long and 2.0 miles (3.2 km) wide at its widest point. The bay was first documented in 1786 by Jean-François de Lapérouse, who named it Port des Français. Lituya Bay is famous for four recorded tsunamis in 1854, 1899, 1936, and 1958.
The 1958 mega-tsunami was caused by an earthquake that generated a landslide at the head of the bay in Gilbert Inlet. The landslide created the highest recorded wave in history. The breaking wave had sufficient power to snap off all the trees up to 1,720 feet (520 m) elevation on the slope directly opposite the landslide.
As the wave traveled out of the bay it overtopped Cenotaph Island where three fishing boats were anchored. One boat sank and the two people on board were killed. The other two boats were able to ride the wave to the open sea where it quickly dissipated. Read more here and here. Click here to download the CoastView app and explore more of Lituya Bay.