Snow wall corridor - Tateyama Kurobe

I noticed that the snow wall corridor at Marudo of Tateyama only open to pedestrian walk until 22 june 2015. What happen after that? I am planning to go there around 26 june. I expect the wall will be still there but will be shorter. Or they will close the corridor?

What happen after that?

Pedestrians will not be able to walk that stretch of the road anymore. The road will be exclusively be used by buses.

I expect the wall will be still there but will be shorter.

Indeed, it is not much of a "wall" anymore during this advanced state of the season. Here is a live camera from Murodo:
http://www.alpen-route.com/live_camera/murodou.html

Or they will close the corridor?

No. The corridor is part of the main road that connects Murodo with Bijodaira. Buses will use it until all the snow is gone and beyond.

Is pedestrian able to stand at the begining of the wall to take pictures after 22 june?

You can see the beginning of the corridor from the bus terminal, but I would keep my expectations low:
https://goo.gl/maps/ukcNw

Will this corridor be visible in mid to late October?

Will this corridor be visible in mid to late October?

It usually starts snowing around early to mid October. So, the depth of snow will be still rather low. There won't be anything worth calling a corridor yet.