Mysterious Road In Korea, Jeju Island.
Vehicles, or pretty much anything, rolls up the slope instead of down. In this video, a bus rolls up the slope even though its engine is off. Apparently, this is because there is a defect in the road. The workers had measured the steepness of the slope on the mountain wrongly, resulting in a mistake.
In a story, this road is found out as a man had parked his car at the bottom of the slope, only to find it at the top come morning. He went into a mental hospital when nobody believed him that there were 'ghosts' over there. the police also had no leads. After his death, his wife brought the police to check one more time, and found out about this mysterious quality about the road.
the voice is pretty much me, and it is not commentary. you can switch off the sound when you watch this video.