Visit Sumikai Cape on Rebun Island, a popular summer destination known for its cobalt-blue waters, scenic bays, and hiking trails that resemble a southern beach. Continue to Sukoton Cape, the northernmost point of Rebun Island, where coastal cliffs and, on clear days, distant views of Sakhalin and Haima Island Lighthouse can be seen; this is the starting point for the cape tour. Hike the Edo-ya Mountain Trail, lined with blooming alpine plants, and stop at the Steller's Island Observatory for panoramic views of Cape Sukoton; the paved trail is easy to walk. Afterward, take the ferry to Rebun Island (about 45 minutes) and explore Humenuma Pond, a serene swamp surrounded by forest that reflects Rishiri Fuji, with a 20-minute walking path perfect for birdwatching. End the day at Nekodai and Mododai, where Peach Rock and Cat Rock overlook the Flower Road, home to rich alpine flora designated as a national natural monument.
Accommodation: Mitsui Kanko Hotel or similar property
