Oirase Stream

The Oirase Stream is a picturesque mountain stream which starts at Nenokuchi, a small town at the shores of Towadako Lake and flows down the narrow and densely wooded Oirase Valley. A hiking trail leads along the most scenic, upper passage of the stream from Ishigedo to Nenokuchi (about 10 km).

Unfortunately for hikers, but fortunately for car drivers and bus passengers, a road runs through the Oirase Valley from which one can see much of the stream. For hikers, however, the busy road can be a distraction, even though the traffic noise is sometimes overpowered by the stream's noise and the birds' songs.

In autumn, when the many maple and other trees turn their color, the Oirase Valley becomes one of Japan's most popular spots for autumn foliage viewing.

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