Oguninuma

Lake that formed 400,000 years ago when nearby Mt. Nekomadake erupted and partially collapsed. The lake is famous for its surrounding wetlands, which are designated a National Natural Monument. Mid-June is the best time to see azaleas and late June to early July is the best time to see bright yellow daylilies bloom here. An 800-meter boardwalk runs through the marshes and around the pond. The Oguninuma Marshland Trail can be reached from either the Oguni Seseragi Trail or the Oguni Panorama Trail.