Which brain area is responsible for memories related to fear?

Well, fear is a mix of emotions. try looking up adrenaline

The main parts of the brain involved with memory are the amygdala, thehippocampus, the cerebellum, and the prefrontal cortex ([link]). The amygdala is involved in fear and fear memories. The hippocampus is associated with declarative and episodic memory as well as recognition memory.