Mise en Abyme: “placed in abyss”

https://en.wikipedia.org/wiki/Droste_effect#/media/File:Efectos_visuales_Interference_en_la_Medina_de_T%C3%BAnez,_T%C3%BAnez,_2016-09-04,_DD_85.jpg

http://ronaldbrichardson.com/metafiction/if-not-a-pipe-then-what/

This is not a pipe

https://womenshapingtechnology.files.wordpress.com/2011/01/ce_kane.jpg?w=490&h=367