Mt. Tsurugi (Sea of Clouds)

Overview

Rising to 1,955 metres in the heart of the Shikoku Mountains, Mt. Tsurugi is the highest peak in western Japan beyond the Kinki region — a broad, table-topped summit draped in dwarf bamboo grass and crossed by wooden boardwalks that offer an unobstructed 360-degree panorama. The mountain straddles three districts of Tokushima Prefecture, and from its crown the layered ridges of the Tsurugi Range fold away in every direction, with the sister peak of Jiro-gyu visible just to the west and the sharp silhouette of Miune to the northeast. This is not a mountain that announces itself with drama at the trailhead; its power accumulates slowly, ridge by ridge, until the summit plateau opens like a stage. What draws photographers and dawn-chasers alike is the sea of clouds (unkai) that forms in the valleys below, most reliably from late September through mid-November. When cold air settles overnight into the deep gorges around the Miyanokosu trailhead — already at about 1,420 metres elevation — thin mist gathers and thickens until, by the first grey light of dawn, the lower world is submerged beneath a luminous white ocean. The peaks of the Tsurugi Range — Jiro-gyu, Tower-no-maru, Miune — emerge above the cloud surface like islands, their outlines sharpened by the cold morning air. Because the phenomenon requires a precise alignment of humidity, temperature drop, and calm winds, no two mornings are identical, and the cloud sea never forms on demand. That unpredictability is part of its pull. Mt. Tsurugi also carries a long spiritual history. Legends hold that surviving members of the defeated Heike clan sought refuge in these mountains after the 12th-century Genpei War, and small Heike graves and shrines still dot the slopes. The inner sanctuary of Tsurugi Shrine sits just below the summit, and mountain-faith rituals have been observed here for centuries. A ropeway (gondola lift) running from Nishi-mura station up toward the ridge — typically open from spring through autumn — makes the upper reaches accessible to hikers of all experience levels, while the final ridge walk through beech and Erman's birch forest remains a pleasure reserved for those who go on foot.

Access

📍 Address: Sugoi, Higashi-Iya, Miyoshi, Tokushima

From JR Awa-Ikeda or Sadamitsu Station, take a bus or taxi to the Miyanokosu trailhead. By car, use the Miyanokosu parking area. On autumn weekends, arrive very early as roads and parking fill quickly.

Map

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