Back of the supermarket

I went first thing this morning to our main supermarket to pick up our shopping order at the back of our supermarket. Whilst sitting in the car waiting I noticed the two triangular glass obtrusions and wondered what they are for. I thought it made a slightly interesting architectural and abstract photo and, as I was working in the house (doing housework and general things) for the rest of the day, it became one of those rare days when the first photo is the only photo and so it's my Blip!