Kiso river is the mainstream of Otaki river.
I went to another tributary of KIso river.
[The headwater of this river.]
[The biggest fish of this season!]
[Japanese char which is called "Iwana[iwʌna]" in Japanese]
[A small dam. I think this is an artifact on rivers.]
[A waterfall where it isn't describe on a map.]
[I rode my bicycle from this gate.]