"No nation was ever ruined by trade."
- Benjamin Franklin

A huge wall that the river has carved out from the soft stone over thousands of years. The river used to erode over a meter every year; however, these days it has been reduced to less than 30cm/year and through continued water control and anti-erosion measures it's expected that it can be reduced to about 10cm/year.















Current item
Picture
Movie clip
Interactive environment