Coastal caves formed by wave erosion are called sea caves. The ceiling has been removed and it looks like a skylight. It is also a popular tourist attraction because it looks heart-shaped when viewed from above. Next to it is a sand ski ground with beautifully sloped white sand. Both are art works created by the old submarine volcanoes and the waves and winds that followed its uplift.
| ｜Area | Southern Izu Area (Shimoda City) |
| ｜Geological Period | Ejecta of submarine volcanoes that erupted on a shallow seabed 10 million ~ 2 million years ago |
| ｜Itinerary | Ryugu Sea Cave Parking Lot→ Tour of Ryugu Sea Cave→ Ryugu Sea Cave Promenade→ Sand Ski Slope→ Ryugu Sea Cave Parking Lot |
| ｜Distance | Approx. 1km |
| ｜Duration | Approx. 90 minutes |
| ｜Level | Walking (with stairs) |
| ｜Meeting Point | Ryugu Sea Cave Parking Lot <MAP> |
| ｜Ending Point | Ryugu Sea Cave Parking Lot (same as meeting point) |
| ｜Participation Fee | Adults: 2,500 yen Elementary school children: 1,250 yen |
| ｜Number of Participants | 1 to about 10 people (1.000 yen more when operating for 1 person) |
| ｜Reservation | Please make a reservation at least one week in advance. |
| ｜What to Wear/ bring | Comfortable clothing, footwear (no sandals), hats, drinks, etc. |
| ｜Notes | The tour will be operated in case of light rain, but in case of stormy weather it will be cancelled. In summer, the tour is not in operation. * Parking fee of 500 yen will be charged separately. Please read about the cancellation policy. |
| ｜How to Apply | Please apply from the "Reservation Form" at the bottom of the page. |
Ryugu Sea Cave Parking Lot
This is Aa paid parking and the meeting point of the tour.
There is a signboard next to the parking lot. It will tell you about Ryugu Sea Cave.
In the other parking lot, there is the entrance to the Ryugu Sea Cave.
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Entrance to Ryugu Sea Cave
Now, go down the stairs and enter the cave!
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Ryugu Sea Cave Inside Tour
A skylight cave with a gaped ceiling. It is a mysterious space where the sunlight comes in. The contrast between the yellowish strata in the cave and the blue sea is beautiful.
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Observatory Heart View Spot
Get out of the cave and climb the promenade that goes around the rim of the skylight. If you look down at the hole from above, you will notice a large heart shape!
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Sand Ski Slope
Next to the Ryugu Sea Cave is a sand ski slope. You can climb and slide down sand hills.
