Watch: A few taps on the side of a roof causes an avalanche of snow to crash down

In what seems to be Japan (according to the video comments), the entire roof of a work building is piled high with snow. But with a long-handled tool that resembles a hoe and a few strategic whacks, it takes only 55 seconds before a dramatic avalanche of snow comes crashing down, leaving the roof snow-free. You couldn't ask for a simpler snow-clearing technique.