Thunder Hole
Waves surging into a narrow granite gap produce a thunderous roar and throw up tall spray, making it the most popular stop on the park loop.
Thunder Hole is a narrow fissure in the coastal granite, carved out by the sea, with a hollow at its base. When a wave rushes in, the trapped air is compressed and produces a deep booming roar, and spray can shoot several metres high. The effect depends on tides and wave conditions. It is usually best 1–2 hours before high tide, and on calm days there may be little to hear at all. The viewing platform has railings. In heavy surf, never climb over the railings to go down onto the rocks. It lies on the Park Loop Road and the Ocean Path, and the parking lot fills quickly in summer.
Opening hours
All day
Nearby sights
- Gorham Mountain
- Otter Cliff
- Sand Beach
- Beehive Trail
- Ocean Path
- Great Head Trail
- Precipice Trail
- Sieur de Monts & Wild Gardens of Acadia