伊豆ジオトレイル（堂ヶ島）

伊豆ジオパークの海岸トレイル。海食洞やトンボロ現象が見られる。

Experience the stunning coastal beauty of the Izu Geo Trail (Dogashima), an accessible and captivating easy hiking trail located in Shizuoka, Chubu. Spanning approximately 6 kilometers with a gentle elevation gain of 150 meters, this scenic route is perfect for families and casual hikers seeking breathtaking ocean vistas without strenuous effort. The trail winds along rugged cliffs, offering panoramic views of the clear blue Pacific and the dramatic geological formations that define Dogashima. Highlights abound on this picturesque journey. Hikers will marvel at the unique volcanic rock structures, including impressive columnar jointing, which tell the story of Izu's ancient volcanic past. A major draw is the iconic Tenso-do Cave, a natural sea cave whose striking skylight can be admired from viewpoints along the path or, for a closer look, via a recommended boat tour from Dogashima Port. Another geological wonder is Sanshiro Island, connected to the mainland by a tombolo that appears at low tide, creating a magical walking path to the island. This Izu Geo Trail (Dogashima) offers continuous visual rewards, making every step worthwhile. Hikers should wear comfortable walking shoes, bring water, and check local tide times if they wish to experience the Sanshiro Island tombolo phenomenon. While generally easy, some sections may involve stairs or uneven terrain, so a basic level of fitness is beneficial. Visiting in spring or autumn provides the most pleasant weather for this unforgettable Shizuoka coastal adventure. This Chubu coastal trail promises an enriching blend of natural beauty and geological discovery.