The Dol hareubang or “Stone Grandfather” is the mascot of Jeju Island. These statues are carved out of the black volcanic rock of Jeju in a wide range of sizes.
These benevolent-looking dudes can turn up anywhere, but you usually see them on either side of a bridge, or in pairs by a gateway, or any place where you’ve got some shit that needs guarded. They are also held to be fertility symbols; rubbing the nose of one of the statues is said to increase a woman’s chances of conception. I would almost think there might be something to this myth, considering this island is crawling with pregnant women.