
Yukiko Yamamoto, CC BY 2.0
Saga · Kyushu
Seven columnar-basalt sea caves carved by Genkai Sea waves on the Karatsu coast, inside Genkai Quasi-National Park. Designated a National Natural Monument in 1925; the largest cave runs ~110m deep. Explorable by the sightseeing boat 'Ika-maru' from Yobuko Port, or viewed from clifftop trails above.
Usual hours — confirm with the official site for holidays + seasonal closures.
Today
Open 24 hoursAdmission
Stored weekly hours
Daily Open 24 hours
How to get there
Showa Bus from Karatsu Station (~30-34 min) to 'Nanatsugama Iriguchi' stop + 30 min walk, or to Yobuko + 10 min walk to boat dock.
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