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Katanuma Crater Lake

XT (ja.wikipedia) / CC BY 3.0

Katanuma Crater Lake

潟沼

Miyagi · Tohoku

A strongly acidic (pH ~2.4) volcanic crater lake in Kurikoma Quasi-National Park near Naruko Onsen, with seasonal boat rentals.

Why we picked it

A striking, otherworldly lake a short drive from Naruko Onsen that most onsen visitors never see.

Crowd level
Moderate
Opening hours
Daily 8:00 AM – 5:00 PM

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

Admission
Free. The acidic caldera lake has a ~30-minute lakeside walking trail with no admission. The lakeside rest house rents boats (paid). Access road is closed roughly late November to late April due to snow/ice.
Nearest station
Naruko-Onsen Station · 21 min walk

Today

8:00–17:00Free

Stored weekly hours

Daily 8:00 AM – 5:00 PM

Tags

lakenaturevolcano

Location

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