Where I live we have had earthquakes and typhoons do a lot of damage.
In one of the shots you can see an crumpled red piece of metal bridge, destroyed in an earthquake.
You can still see the concrete ramparts.
One good thing with the drone is I can inspect areas after heavy rains to see if any landslides.
The river is really dry atm as we have had no rain for a few months. After heavy rains the water will fill the width of the basin and be streaming really fast.