The "deep" appeal of the video lies in its use of psychological horror tropes:
It belongs to the genre, similar to The Mandela Catalogue or The Backrooms .
"CAROL1903.mp4" is a cryptic, short-form horror video that gained viral attention within the "unsettling" and "analog horror" communities. It is widely characterized by its grainy, vintage aesthetic and disturbing audio-visual cues.
: Some suggest the "1903" refers to an entity that has existed for over a century, caught on film across different eras.