Geosite List Home Geosite The River Terrace in Shimooi The River Terrace in Shimooi The river terrace was formed by downward erosion where the riverbed used to be. There are signs that our ancestors had lived up on the terrace here ten thousand years ago. Map The River Terrace in Shimooi 33.9398509,135.9462699,14 See in the map app