A Thundering Roar

It wasn't really a thundering roar. That sounded good as a title. It sounded more like a large flag flapping and snapping in a high wind.We were coming back across the sands after a long sunny afternoon at the Bluffer's Park beach when we heard what we thought was a flag making a lot of noise. Looking everywhere for the non existent flag we both saw the dust rising up from one of the Bluffs. Maybe they have names but I don't know them. This Bluff close to us had shed rather a lot of itself and slid 200 feet to rest in the trees and grass back of the beach. An avalanche for goodness sakes right here in Scarborough. I thought the Bluffs melted a bit when it rained and that is what caused their erosion but no. They go in for drama just like the rest of us.
Two days later and we were back at the beach and the path of the slide was very clear now that the dust had settled. Literately. Small trees and shrubs and a big chunk of Bluff were all gone. Wow! What next? Earthquakes?