Hagosudong Beach sits on Udo in Jeju, on the way to Biyangdo, with a wide stretch of white sand and shallow emerald water. The water is shallow and slopes gently, making it suitable for children to play in, and kayaks allow a view under the surface. Pyeongsang platforms and parasols are set up on the beach, with lodgings, cafes and restaurants clustered nearby and a CU convenience store directly attached. The road leading into the beach is narrow, so movement is inconvenient when cars and people crowd in.