Isolation also plays a major role. Take 'The Lighthouse' for instance. The two lighthouse keepers are isolated on a small island, and as strange things start to happen, they have no one to turn to. The sense of being alone in the face of the unknown is very frightening.
Well, in some of the stories, the sudden appearance of a ghostly figure can be really terrifying. For example, a character might turn around and see a pale, translucent figure just standing there, with eyes that seem to pierce through their soul.
In my opinion, 'The Call of Cthulhu' is one of the most terrifying. It involves an ancient, otherworldly being that drives people mad just by the knowledge of its existence. It's a Lovecraftian horror that plays on the fear of the unknown and the cosmos.
The most terrifying elements often include the unknown and the uncanny. His stories might feature strange and otherworldly creatures that defy our understanding of reality. For example, in some of his tales, there are entities from dimensions beyond our comprehension, which is really spooky.
The use of atmosphere is crucial. A dark, isolated setting like an abandoned asylum or a fog - covered forest can immediately create a sense of dread. In short stories, the writer can quickly set this mood, for instance, by describing how the moonlight barely penetrates the thick trees in a forest where a character is lost. Also, the idea of being alone and helpless in the face of a possible threat is terrifying. If a character is trapped in a haunted house with no way out, it amps up the fear factor.
The most terrifying elements are often the unknown and the cosmic horror. Lovecraft's stories often involve things that are beyond human understanding, like ancient and powerful entities from other dimensions. For example, in 'The Call of Cthulhu', Cthulhu is this indescribable and immensely powerful being that lies dormant in the ocean, and just the idea of its existence is terrifying.
They often have a quick build - up of suspense. For example, in many short horror stories, the first few sentences might introduce a strange or eerie setting like an old, dilapidated house. They also tend to have a single, impactful 'scare' moment, such as a sudden appearance of a ghost or a discovery of something horrifying. And the endings are usually left open - ended or with a final twist that leaves the reader feeling uneasy.
Isolation is a big one. When you're on a road trip, you can be in the middle of nowhere. For example, if your car breaks down in a desolate area, like in the desert or a remote forest, and there's no immediate help. It makes you feel vulnerable.
The unknown is a big factor. For example, in stories where there are unexplained noises or figures. You don't know what they are or what they might do, and that scares you. It plays on our natural fear of the unknown.
The unknown is a very terrifying element. For example, in a story where there are strange noises in the dark but you don't know what's making them. It scares people because our imagination runs wild.