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Why this “falling rocks” sign is more important than most

• donatj 5y ago
  It’s a neat technical solution, but it seems like a backhoe could have in several hours dug a ditch and effectively caught the falling rocks?
  • rzzzwilson 5y ago
    Tens of tons of rock moving at 40+ km/hr takes a lot of stopping. Plus the ditch may not last long because of ground movement, and in winter it would probably fill up with snow and ice.
  • eesmith 5y ago
    There is a ditch. The woman called it a "dam". https://youtu.be/o-oVXYkBwgw?t=146 https://youtu.be/o-oVXYkBwgw?t=146 with earlier views at https://youtu.be/o-oVXYkBwgw?t=59 https://youtu.be/o-oVXYkBwgw?t=59 and the bottom right of https://youtu.be/o-oVXYkBwgw?t=88 https://youtu.be/o-oVXYkBwgw?t=88 . I can see a couple of trade-offs. 1) How large should the ditch be? Large enough for 22M cubic meters for the worst-case scenario? Probably not. 2) https://youtu.be/o-oVXYkBwgw?t=116 https://youtu.be/o-oVXYkBwgw?t=116 shows that the road can be near the slope. Do you reposition the road to build a ditch? If so, then you take away from the productive fields and pastures.