in ten we had a very big typhoon which cam up here and we got a very serious for at the government of the time decided to excavate this. does. they wouldn't get rid of the frog. so therefore this. was a kid with zero point five meters and was on the other so they're swarming the water i can top this. that because the area behind the river was concrete through it. in the past buffer zones provided a method of diverting from mortars into arable fields then due to a lack of living space in the middle of the twentieth century people settled on these fields thereby creating the toto district just as in bangkok and shanghai