"Sue White" wrote in message
...


The horizontal lines on the mountainsides are rockfall fences. Like
most Alpine communities they're trying to reforest their steep unstable
slopes because trees look better and don't need so much maintenance.

--
Sue
The trees stopped/deflected avalanches. After being cut down centuries ago
they could not grow back.
I've read that some alpine towns with a remaining upslope forest ban anyone
from even walking in them.
jim