You must have run into these: chain link fence “nets” on cliffs and so forth, presumably to catch falling rocks. I see these things all the time on the trail (read: mountain roads near Fallbrook, Ramona, etc.) and frankly thought they were a joke. Chain link fence? Shoot, that crap can’t even keep out the neighborhood hoodlums, let alone 5 tons of rock.
Certification of a 5000Kj Rock Fall Barrier
I am perfectly happy to be corrected on this point. Awesome. Just awesome. I can’t embed Liveleak video for some reason but I am sure you’ll survive the click.
Tip o the hardhat to Fark.