Safety remote trigger. Video

[Slim]

@LiquidFeet asked about remotely triggering an avalanche.

Several people gave good explanations.
The one I visualize it is "speed dominoes' where people layout an entire room full of dominoes upright, and after tapping one, at the end, the whole thing collapses. The dominoes are the weak layer, and the if there is a book sitting on top of those dominoes, on the flat, it will just "whoompf", down an inch. But if there is another book resting on dominoes on stairs, will come sliding down.

Anyway, here are two great videos discussing avalanches triggered remotely from low angle terrain:

 

[Slim]

For people (like me) who tend to choose pretty conservative terrain, this is really important to keep in mind. We might be on flat ground, but what is above us?
So events like that that remind us to consider “alpha angle”.

Mountain Skills: Understanding Alpha Angles

Picture this: You’re skiing across low angle terrain, but need to traverse below a steep open face with no cover. Your avalanche awareness bells start chiming, “Danger!” so you decide to ski out of your way to remain clear of the possible slide path. But there are no trees around to give clues...

backcountrymagazine.com