Mono Monday challenge: Unusual Angle

I took several shots of different things while trying to find something for this challenge; any of them would have done but they were all a bit, well, ordinary. In the end, I went back to the first one I took which I thought had a slight look of the inside of a cathedral or some sort of industrial building. In fact, it's my bathroom radiator taken from the end and looking inside.

I'm behind with comments again but thanks for all the comments, stars and hearts on my recent Blips - all much appreciated!