Though thru the clouds the wall of light is well visible. It is a thin wall of light when viewed from the side forms an arc. As it is right on top of me you see it like you are standing with your cheek against your wall and you look at your ceiling.

The highest (approx 350km) and lowest (approx 80km) points are just outside of this image so what is visible here is approximately about 240-250 km in length.