Acadia National Park Thunder Hole Photos
Acadia National Park Thunder Hole – Timing is everything when it comes to experiencing the power and majesty of the sea at Thunder Hole. On calm days, Thunder Hole appears benign as the waves rhythmically lap against the rocky shore. But when the ocean is roaring, the breaking waves race into a narrow cleft in the shoreline rocks, resulting in a loud booming sound and sending cascades of spray shooting into the air. The Island Explorer shuttle bus stops here about every half hour during normal seasonal daytime hours.