Smith, had reservations about disrupting the sandstone riverbed above St. Anthony Falls, which could potentially alter the water ... steaming over at full speed. The Stone Arch Bridge’s sturdy ...

This stone bridge over the Tiber embodies both Roman architectural ... is the presence of a small additional arch in the centre, designed to reduce water pressure during floods.

"Over this river there is a very fine stone bridge, so fine indeed ... the "Lugou River is also called the Heishui (Black Water) River." In the local dialect in ancient times, lu (reed) meant ...