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  4. Ozenuma Lake
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Ozenuma Lake

Σ64 / CC BY 3.0

Ozenuma Lake

尾瀬沼

Fukushima · Tohoku

A tranquil montane lake at about 1,660 m on the eastern side of Oze National Park, ringed by marsh and boardwalk and reflecting the cone of Mount Hiuchi, Tohoku's highest peak. A Ramsar-listed wetland since 2005, its ~7 km lakeside loop passes the Ozenuma Visitor Center and lakeside huts and is quieter than the Ozegahara marsh to the west.

Why we picked it

It sits a long hike from every trailhead and on the far Fukushima side, so it draws overnight hikers rather than the crowds who day-trip into Ozegahara.

Best season
Summer
Crowd level
Moderate
Opening hours
Daily Open 24 hours

Usual hours — confirm with the official site for holidays + seasonal closures.

Admission
No admission fee to Oze National Park. In Aug-Sep 2026 a VOLUNTARY ¥500 'entry cooperation fee' trial runs at the Hatomachi Pass and Oshimizu trailheads (free for junior-high and under). Access costs (shuttle bus, parking) are separate.

Today

Open 24 hours¥500

Stored weekly hours

Daily Open 24 hours

Tags

lakewetlandwalkingmount-hiuchi

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