Usually done below a clear cut in ravines where the avalance will go through.
When you clear cut an area, there is nothing to hold the snow back, so the avalance danger increases untill new trees are growing.
Hence the wooden barrier.
In areas of permanent danger, permanent barriers are put up...
I'm late to the discussion as usual.
Time difference, ya know.
I've seen that done a lot in Schweiz.
Not against rockfalls but as avalance blockades.
The guy who originally thought that out has my respect. Quite a feat.
Jed, say you want to install the blockade in a really steep place with...
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