What is the description of the gloomy fog?

This sentence is a description of the surrounding environment, using gloom to set off the gloom of the environment. Use exaggerated rhetoric to describe the darkness of the environment and set off the tragic atmosphere.

A strange atmosphere, an atmosphere of terror that seems likely to die at any moment, hangs over the whole mountain range, just like the sound of brotherhood of the Wolf coming from the abyss of the underworld.