Silmido Island is a small island next to Incheon's Muuido Island. It's known as the filming location of the hit Korean movie "Silmido" (2003). The island is available to reach when there's ebb tide from Muuido twice a day so it's possible to walk from one island to another everyday during the low tidal waves. The sea parting hours can be checked on the Korea Hydrographic and Oceanographic Administration website. ( http://www.nori.go.kr)