◆Walk around Stair-Stream◆

  The view around the stair-stream changes much corresponding to the season, to the day and the time.
  I visited there at 10-11 a.m. in mid August, 2017 to see the sight. It had rained until dawn and after sunrise, fogs went up along the ravine from Matsumoto basin to the hearstream of Ushibusegawa.
  Sunshine came into the ravine through fogs. I could see clearly the near landscape but the distant view was hazy. It's a fantasic scene of highland in summer.

▲Surface of lake reflected calmness in fog


▲Upper stream view was fading into fog in contrast to near one.


▲Upstream was very hazy, but immediate water was shining...

  I hoped to take pictures of clear views after rain there, forgetting a commonsense that heavy deal of fogs would come up to the highlands. In addition, it was not easy to walk on a grassfield of the streamside.
  Howver a young man camping in a tent there in such a bad condition. The scene there was the best to feel calmness in highland far away from urban busyness, even if it rained.

  I was so moved that I felt it was right to come there just after rain.
  I felt lucky to find somef Miyama-karasu-agehas, the swallowtails which we would see only in deep mountains. A couple of them on a way under the precincts of Gofukuji temple, thereafter another couple at a confluence point of the main stream and its branch, Dorozawagawa. All of them fried there seeking water or mud (minaral) and staied on the streamsides.
  That they acted in a pair would mean that there is a spawning-breeding area. Teir larvas, after incubation, would grow eating some kind of plant, for example Sansho i.e. Japanese pepper. I remembered I found a school of Sanshos along the walking-way.
  The hummings of cicadas were sounding boisterously all around the forest. There was a sanctuary of insects.

▲Streamside is popular camping site


▲Warning about stone falling down : it is at the bottom of steep ravine


▲Confluence point of the main stream and its branch, Dorozawagawa


◆The ravine is a habitat of Swallowtails


▲A pair of Swallowtails were drinking water on stream bottom.

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