I once drove around a corner in Oregon and was confronted with a landslide that had obviously only just happened. There were two cars in front of me, and the driver of the lead car said he passed that way twice every day, and there had been no sign of a problem two hours ago.
The debris was five feet deep across the road, and it shook me up to think how quickly these things can happen. The boulder in your link obviously weighed many tons, and would have killed everyone instantly, had it hit the car.
Drove from Fort William to Oban down the coast road, walked into the CO OP in Oban and on the Radio it announce the coast road was blocked due to a landslide. Can only have happened a very short time after I had pasted.
If that large rock had tilted a fraction more the white car would be scrap (or scraped up off the road).
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