Is this related to masonry? It's scary.
>>18787162
Looks like a Chamber of Reflection with one of those dog filters put over the image. Though a CoR shouldn't have the square and compass in it, so it might be someone's study.
>>18787342
Thank you.
>>18787342
Dog filter sounds about right. The thing smells like a dog, to me.
>>18787911
http://i.imgur.com/ZBEF5mJ.gif