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  4. Onigashima Cave (Megijima)
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Onigashima Cave (Megijima)

Jyfrite, CC BY-SA 4.0

Onigashima Cave (Megijima)

鬼ヶ島大洞窟

Kagawa · Shikoku

A 400m-deep, 4,000m² cave system near the summit of Washigamine on Megijima, discovered in 1914 and long identified by locals as the 'Ogre Island' of the Momotaro folktale — the interior is fitted out with an ogre's great hall, sleeping quarters and guard room, complete with painted scenes and larger-than-life oni statues.

Why we picked it

Ferry-adjacent to Takamatsu (20 min) yet almost entirely skipped in favor of Naoshima/Shodoshima — a genuinely odd, folklore-driven attraction most visitors have never heard of.

Crowd level
Moderate
Rating
3.9· 691 reviews
Opening hours
Mon–Thu 7:40 AM – 4:45 PM Fri–Sun 7:40 AM – 4:40 PM

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

Admission
Adults (high-school+) ¥600, elementary/JHS ¥300, 65+ ¥500 with ID, preschoolers free. Open year-round, 8:35-16:55 (last entry 16:30).
Nearest station
JR Takamatsu Station
Website
onigasima.jp

Today

7:40–16:45

Admission

  • Adults (high-school+) ¥600, elementary/JHS ¥300, 65+ ¥500 with ID, preschoolers free. Open year-round, 8:35-16:55 (last entry 16:30).

Stored weekly hours

Mon–Thu 7:40 AM – 4:45 PM Fri–Sun 7:40 AM – 4:40 PM

How to get there

Ferry from Takamatsu Port to Megijima Port (~20 min), then shuttle bus to cave entrance (~10 min) or 30-45 min walk.

Tags

cavefolkloreisland

Location

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