Keya no Oto, within Genkai Quasi-National Park, is renowned for Japan’s largest basalt cave, a nationally recognized natural monument. The cave, with a height of 64m, depth of 90m, and width of 10m, presents a mystical landscape. From mid-March to November, tourist boats operate from Keya Fishing Port, offering a majestic view of this geological marvel.
• Boat Operation: 9:30~12:30 (every 45 min), Sat., Sun., and hol.: 9:30~12:30, 13:30~16:30 (every 30 min)
• Boat fare: ¥1,000, under ES¥500 (1 infant free per adult)
• 520 Shima-Keya, Itoshima City, Fukuoka
• Access: 10 min. on foot from “Keya” bus stop
• http://www.keyaotokankousha.jp/
