“Daddy, what’s the biggest ever tidal wave?”. A pretty standard question from an inquisitive 8 year old, and probably sandwiched somewhere between “What is the most poisonous spider?” and “Who would win a fight between Tyrannosaurus Rex and a Megalodon?”. As smart as I like to think I am, I didn’t have the answer to this one at my fingertips so we reverted to the world wide web. “July 1958, Lituya Bay in Alaska. A 7.8 magnitude earthquake caused 80 million tonnes of rock and ice to drop from a mountainside into a narrow fjord. The resulting mega-tsunami reached 524 metres high. That’s a wall of water higher than the Empire State Building.” So big in fact, it’s hard to imagine what that would look like. I live on the sunny side of a valley, just 100 metres above Bourg…