At the end of the hike to Mount Ougi and Mount Momokura, I went to have a look at the so-called Monkey Bridge (猿橋; Saruhashi), which gave its name to the area of Otsuki surrounding it. It is a wooden bridge spanning the Sagami River and also one of the three unusual bridges of Japan. This page has some details on its construction (and the list of unusual bridges). After the bridge, I went to the nearby Saruhashi Park before going to the train station and back to Tokyo.
Above, on the other side of the Chuo Expressway bridge.
Above, view of Sagami River and Saruhashi Park.
Above, the Monkey Bridge.
Above, view from the bridge.
Above, stairs to the viewpoint in the canyon.
Above, at Saruhashi Park.