photo by Yukiko Yamamoto from flickr · CC BY 2.0
photo by Pekachu · CC BY-SA 4.0
The largest of the seven sea caves: 3 m wide, 110 deep, in basalt.
Seven sea caves formed in columnar-jointed basalt by the waves of the Genkai Channel, a national natural monument. The largest measures 3 metres wide by 110 deep. A boat tour from Yobuko (about 2,000 yen adults, 1,000 children) enters the caves from the sea; on land, a coastal path overlooks them from above.
On the coast north of Karatsu, near Yobuko, not far from the already listed Niji no Matsubara.
ℹ️ Boat tour from Yobuko, operator Marine Pal; free coastal path for the view from above.
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Nearby
Yobuko Morning Market2.8 kmphoto by flickr ID; gtknj ( URL ) · CC BY 2.0
Nagoya Castle Ruins5.6 kmphoto by sk01 · CC BY-SA 3.0
Hamanoura Rice Terraces9.2 kmphoto by TsuruSho7 · CC BY 4.0
Former Takatori Residence10 kmphoto by STA3816 · CC BY-SA 4.0