Reference: allaboutjeju.wordpress.com/2014/06/16/rainy-day-samyang-black-sand-beach/
Celebrate at the Samyang Black Sand Festival every July
This beach is famous for its black sand, not white sand. The dark-colored sand contains silicate minerals and is said to alleviate arthritis and nerve pain by covering them. There is a steam bath area that charges a separate fee to use.