Ruska

One of the few Finnish words I have managed to pick up. Simply put, it just means the colour change which comes over the trees in the Autumn. I didn't even have to leave my own front door to capture this.

The insert is the original of yesterday's puzzle picture. It was neither convex nor concave nor both but simply a flat plane. In fact a door. Perhaps I cheated by tilting it like I did but it intrigued me the way the brain sometimes wants to see things which actually are not there.