Dogashima, on the Izu Peninsula’s wild west coast, is famous for its white volcanic tuff cliffs and wave-carved sea caves, the striking result of layered volcanic ash sculpted by the sea. The highlight is Tensodo, a skylight cave whose roof has collapsed to leave a natural round opening, sending a shaft of light onto the blue-green water below; small sightseeing boats cruise into the cave itself, while a clifftop path above lets you peer down through the skylight, and at low tide a tombolo land bridge appears to a nearby island.
🗓️ At a Glance
| Location | Nishiizu (Dogashima), Shizuoka |
| Hours | Boat tours ~9:00–16:00 (weather-dependent) |
| Admission | Boat tour around ¥1,500 |
| Time needed | 1.5–2.5 hours |
| Best time | Calm, clear days for boat entry; low tide for the tombolo |
What to See
- Tensodo skylight cave, lit by a natural opening in its roof.
- Boat tours cruising directly into the wave-carved caves.
- White volcanic tuff cliffs sculpted by the sea.
- A tombolo land bridge to a nearby island at low tide.
Combine Your Visit
- Combine with Nishi Izu Wild Coast sunsets on the same shore.
- Pair with Izu Peninsula sightseeing more broadly.
- Read our Shizuoka overview .
Getting There
- By car: the practical way, on the west coast road with parking at the port.
- By bus: buses run from Shuzenji and Shimoda, though services are infrequent.
Tips
Boat tours are weather-dependent and stop in rough seas, so check operating status before making the drive, and go on a calm morning for the best chance of entering the skylight cave. If boats aren’t running, the clifftop walking path still gives a fine view down through the Tensodo skylight, and the low-tide tombolo walk is a fun addition when timing allows.
