First opened on the west coast in 1928, it is a beach with a 1.5km depth of 1 to 2m, a white sand beach 50m, a water temperature of 22 degrees Celsius, and a slope of 4 degrees.

Around the first full moon and the next day of the lunar calendar every month, 1.5km of sea roads are opened from the beach to Seokdaedo Island two to three times. Along this sea road, it is fun to catch crabs and clams, and Muchangpo Beach, which adds a beautiful natural scenery of strange rock formations and sea pine, is attracting tourists from all over the country with its surrounding sea fishing and abundant groundwater.

The open sea road of Muchangpo Mystery is a phenomenon in which seawater is revealed at low tide due to sea water disruption.
This phenomenon opens the sea route from Muchangpo Beach to Seokdaedo Island, an uninhabited island.
The 1.5km sea route between Muchangpo Beach and Seokdaedo Island, which is caused by the splitting of the sea, is visited by many tourists as it can catch the mysterious spectacular scenery, crabs, and clams.