The great river of Narnia runs through the centre of Narnia, all the way from the wilderness in the west, beyond the lamppost, to the sea on the east, where the great castle of Cair Paravel lies at its mouth. Along the river lie some of Narnia's most famous landmarks; amongst which are Beaversdam and Beruna. It's crossings lie at Beaversdam, in the form of the dam, and at Beruna where it shallow enough to wade through. During the reign of Miraz there was also a bridge at beaversdam, but this was destroyed when Miraz was defeated by Prince Caspian.