Hypnotic Screeching

 is one of the Legends (specifically a Phenomenon) that can be encountered in Nightfall: Cryptic. The can occur in the Pine Mountains Region.

The hypnotic screeching is a loud, irritating buzzing sound heard when ascending Mount Mammoth. Near the foot of the mountain, it is a low drone, but the closer the player gets to the peak, the louder it becomes. Once the player reaches the highest point on the mountain, the screeching halts to a stop.

To experience this phenomena, simply begin an ascent up Mount Mammoth.


 * Vic Wolfe will note the similarity of the screeching to infrasound, a sound known to cause madness, and a possible explanation of the Dyatlov Pass Mystery.