In Fallout: New Vegas, there is a location in the game known as “Lone Wolf Radio”, which consists of a single damaged trailer with a bunch of radio equipment and junk items inside.
Despite not holding any unique loot, or being relevant to any story or side-quests, there is an urban legend surrounding it, saying that if you go there during a certain time after doing certain requirements, you will be attacked by a unique NPC, dressed from head to toe in wolf skin/pelts.
Another, more darker rumour about this location, is that if you mess around with the radio equipment, you will end up tuning into a broadcast that plays the crys and screams of children, and would then set off a side-quest involving you finding the source of the location to hunt down a serial killer targeting children.