Maybe it's the setting. A tall mountain can be a very isolating and dangerous place. There could be all kinds of unknown things lurking there.
The unknown threats are often what make it terrifying. In a tall mountain environment, there could be strange creatures, or maybe there are some ancient and dark secrets hidden in the mountain. The characters might be cut off from the outside world, so they have no easy way to escape from whatever horror they encounter. Also, the harsh weather conditions on the tall mountain can add to the sense of danger and horror. It makes it seem like the environment itself is out to get the characters.
In 'the tall mountain horror novel', the combination of elements creates a truly terrifying experience. Firstly, the height of the mountain gives a sense of vertigo and the feeling of being far removed from safety. Secondly, the remoteness means that help is not easily accessible. Thirdly, there could be some sort of cult or supernatural presence associated with the mountain. The idea that there are forces at work that are beyond our understanding, and that these forces are in control of the mountain environment, is what makes it so scary. It makes the characters, and by extension the readers, feel powerless against the horror that unfolds.
I'm not familiar with this particular 'the tall mountain horror story'. But if we think about common elements in mountain horror stories, there might be a sense of isolation. People on the tall mountain are far from help. There could be a monster or some kind of malevolent force that preys on the fear of those who are alone on the mountain. It could also be that the mountain has some dark history, like a place where a massacre happened long ago, and now the spirits of the dead haunt the area.
One possible element could be bad weather. For example, a sudden blizzard or thick fog that makes people lose their way. Another could be strange animals that act in an unnatural way, like a deer that stares at you without fear and then suddenly disappears. And of course, there could be a haunted cabin on the mountain where all kinds of spooky things happen.
The use of psychological elements. For example, in 'Black Swan', the main character's descent into madness is both fascinating and terrifying. The stories play on our deepest fears, whether it's the fear of being alone, the fear of the dark, or the fear of something malevolent that we can't see. They also often use elements of the supernatural, like ghosts or demons, which are inherently scary to most people. The combination of these factors in the stories of '13 most terrifying horror stories' makes them truly terrifying.
A good horror story usually has a creepy setting, well-developed creepy characters, and a sense of impending doom. The combination of these elements keeps the readers or viewers on the edge of their seats.
The presence of cats alone can be scary in a horror context. They are often associated with mystery and the unknown. Maybe in 'the cats horror novel', they could be possessed or have some sort of evil intelligence.
The sense of the unknown. When you don't know what lies in the abyss, it scares you. It's like a black hole of fear that your mind can't fully grasp.
Well, in a tricycle horror novel, perhaps the tricycle itself is cursed. It could be that anyone who rides it is doomed to a series of horrifying events. For example, it might lead the rider into a nightmarish otherworld where grotesque creatures lurk, and the tricycle is the only means of transportation, trapping the rider in this horror realm.
The grotesque creation of the monster in 'Frankenstein' is a major factor. The idea of stitching together body parts and animating them is deeply disturbing.
The setting of the orchard might be a key factor. It could be a place filled with dark secrets, like an old orchard with gnarled trees that seem to have a life of their own at night. Maybe there are strange noises coming from the orchard, or hidden figures lurking among the trees.