Sketchbook Oddity

I was pondering maybe doing a inside-outside drawing or watercolour, which resulted in practicing linear perspective, which lead me to this oddball hallway. Lyra is VERY interested in what's going on here, and is convinced that there's a cat just around the corner. I can't remember the last time I really worked in pencil (possibly as far back as university), but this just kept on going while I enabled my podcast addiction, and continued on when I started a new audiobook.